By the way, does anyone else think Jukain's post was just a long ramble with no solid reasoning provided for any of his rank changes?
Not really.
These are the C to D Rank changes that I discussed with Jukain and alexwolf on IRC, and I believe that they are very accurate in terms of comparisons:
B- - only here so I can move Sableye
Sableye | great typing, priority burn and recover and taunt are great niches and sableye is definitely worth at least this rank.
C+ - couple of niches with workable metagame roles
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Mega Aggron | this thing is like the definition of physical tank. with pure steel-typing and filter + base 230 defense you'll be hard pressed trying to take this down physically, possibly even with super-effective attacks. it beats azumarill, dragonite, mega scizor, non-subpunch mega mawile, mega pinsir, and the lati twins. it also has a decent offensive presence with heavy slam and a high attack stat. no reliable recovery and special attack vulnerability kinda hinder it a bit though.
Alakazam | this thing is a nice revenge killer as it can potentially rk a lot of things that are slower multiple times and one thing faster in a game. very frail though but twave is nice.
Alomomola | wish plus regenerator is a niche, magic coat to fuck deo leads and toxic users is a niche, plus this thing sees wcop uses and is very effective at walling most physical attackers.
Mega Blastoise | while this is a great bulky and powerful spinner that would surely move up if it wasnt a mega, dedicating a mega slot to a spinner as opposed to something to build a team around is pretty annoying.
Chandelure | i wasnt sure about this before but alexwolf convinced me. subsplit is a real pain for stall to handle and sub + 3 attacks has nice coverage and hits quite hard, but it wears itself down quickly.
Ditto | ditto is kinda hard to rank but i think c+ is fine since i think it already was here. i could see it go down up or w/e.
Goodra | i kinda think this isn't as bad as everyone makes it out to be. it has wcop uses, is a nice special tank that actually has decent power. it suffers from being worn down quite quicky. it walls a lot of the top special attackers in the tier, especially zard y.
Gorebyss | same rank as venomoth, very similar role except it passes an attack boost and has a few other advantages.
Infernape | it is a niche mon in general. defensive sets can switch into bisharp while offensive sets are nice on zard y teams to check sharp and benefit from the sun. stallbreaker sets have one advantage over mew (beating heatran) and dice used sr lead a bit.
Klefki | pro priority twave spikes and screens. it also has the best defensive typing in the game.
Krookodile| is a nice aegislash check and unlike hippo it gets stab knock off and some other interesting moves. quite niche but it has a recognisable role in the meta.
Omastar | this and seismitoad are lesser used special rain sweepers over keldeo and kingdra with a few advantages. omastar is the most powerful and hits like a nuke, 2hoking ferrothorn with hydro pump. it is nice if you want a complete powerhouse on your rain team.
Rotom-H | it is a nice pivot and it checks talonflame well. havent used it much though.
Seismitoad | exchanges a bit of power for the ability to check thund, be immune to twave, and have a bit of nice coverage like focus blast and earth power.
Shuckle | webs is an inconsistent playstyle in ou but it has some uses. shuckle always does its job though, even if its job is a free +2 for bisharp.
Smeargle | yeah sr spore quiver/smash pass is a niche, everyone knows what smeargle can do.
Starmie | i think this has the offensive presence to be here, it is powerful with analytic and spin gives it an advantage over greninja.
Togekiss | ehh, i think this thing is mediocre but it can do some stuff ok i guess.
Venomoth | decent quiverpasser, if you use it with something like landorus it gets REALLY scary, but it definitely has a workable metagame role. i dont think competition with gorebyss is really a thing because the special defense boost is very beneficial and you also have sleep powder for easier setup, as well as the freedom to run sash.
Volcarona | it's annoyed by talonflame and azumarill, but the offensive (qd / fiery dance / giga / hp ground or rock) or bulky (qd / fiery dance / giga / roost) versions of the quiver dance sets each have a bit of advantage to them.
C - one small niche with a little bit of merit in the meta
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Blissey | this defines one small niche with a little bit of merit in the meta. niche of lefties + taking on landorus better than chansey + not minding sand as much + being able to avoid 2hkoes and such with protect is pretty much the definition of this rank. yes chansey is better defensively overall. however, blissey can still fit in this rank for its few advantages.
Celebi | celebi checks things like keldeo and lando, it has a huge supportive movepool (twave, recover, sr, much more) can do some work offensively and even has bp for pursuit.
Cresselia | this thing is nice. it walls common threats like lando, was seen on a wcop stall and is mandatory on tr teams, a c rank playstyle.
Exploud | always on tr so it fits in this rank as well, phenomenal wallbreaker with tr support, boomburst is a nuke.
Haxorus | dd sets are pretty outclassed by zard x but sd hits massively hard and mold breaker eq is pretty cute as well.
Hydreigon | this thing is pretty outclassed by most other dragons but at least it has a great movepool so not much can switch-in on all possible moves. typing is nice also.
Magnezone | steel trapping niche is pretty barren but usable for teams with say, diggersby. specs analytic is kinda cool imo.
Porygon2 | tr pokemon that walls some nice shit. not lando tho cos knock off.
Tangrowth | also walls a lot, regen is cool, av works if you are alexwolf :]]]]]
C- - one small niche
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Arcanine | the perfect definition of one small niche: hard countering mega mawile on stall with intimidate, wow, and morning sun.
Mega Banette| another small niche, revenge killing almost every setup sweeper regardless of amount of boosts. very flawed in practice though but still worthy of a low rank.
Dugtrio | in generall, dugtrio is a pretty poor / outclassed trapper. it does very little outspeed of /potentially/ trapping heatran / tyranitar. Jukain is right in that is incredibly specialized and most often another trapper will do you better.
Gardevoir | the only gardevoir set worth running aside from mega is scarf. it has a few advantages, a stab fairy move is one and trace is another to rk exca / swift swim pokemon / switch in on heatrans lava plume etc etc. very minor niches, this thing isnt very worthwhile but its niche is apparent enough for c- rank.
Gastrodon | one small niche: it does very well against rain teams, otherwise it's just a bulky water-type that faces huge competition from all the other bulky water-types.
Gourgeist-Small | walls excadrill and diggersby i guess. can burn them. very niche pokemon.
Hawlucha | is BL. can potentially sweep with the niche of hjk + unburden+ cool typing but it faces issues from popular meta threats like aegi, thundurus, talonflame, mega pinsir, etc.
Mega Houndoom | i dont think this is hopeless, it sits at a niche speed tier above keldeo and lati@s and gengar, np is actually quite powerful, and solar power + hwish sunny day latias + venu is /ok/ in some matchups. definitely very flawed (sr weak, hard to setup, other wallbreakers) but not hopeless.
Kyurem | unfortunatly terribly outclassed but subroost pressure is a minor niche so i guess it fits here.
Mantine | small niche, checks landorus and keldeo on stall teams while also being able to use defog.
Moltres | agent gibbs knows what he's talking about in regards to moltres, and he's pretty much spot on. it handles mawile ok, can subroost pressure stall like kyurem, and beats steel types with its stab which is cool.
Ludicolo | a very niche rain sweeper that faces competition with kingdra, keldeo, and omastar (and even seismitoad) but it can beat av azumarill which is typically an annoyance.
Slowking | checks zard y and many special pokemon but generally an inferior slowbro.
Sharpedo | sharpedo can clean up if things are very weak and you have hazard support, but it has so many things it's walled by that it can't do much in an effective team. speed boost + destiny bond is an ok combination though.
Thundurus-T | thundurus outclasses this thing so bad but at least there's powerful double dance sets and a bit of higher special attack.
Wobbuffet | first of all, use sitrus berry. second of all, unlike gothitelle, this takes on one offensive mon instead of several defensive ones. small niche encore dbond etc.
D - one small often outclassed niche
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Mega Abomasnow | this thing is nice against some stalls and has hail for chip damage, but often requires tr to be successful and is very very niche.
Cloyster | cant setup against much with its typing and spdef and it is walled by the best pokemon in the game, aegislash.
Cofagrigus | works on tr i guess but seems kind of worthless.
Empoleon | modest emp checks greninja on offensive teams and it defogs which is cool but av azu checks gren on offense too and has more offensive power, other defoggers are more efficient with their recovery.
Froslass| this could move up once deos are banned but it is outclassed for now.
Jirachi | every role it can do can be done better by something else, and it has a detrimental typing.
Meloetta | checks aegislash but hopelessly outclassed at anything else.
Reuniclus | terrible typing cant setup on much and slow. this and emp and toxi are the only things i could see moving up to c-.
Snorlax | walls zard y i guess.. kind of a sitting duck and easy to take down physically.
Toxicroak | this thing can sd on a few things and switch into keld (and crocune). stab gunk shot for clefable is nice. however walled by a lot of things in the meta (aegislash) and revenged by talonflame and pinsir.
Unranked - here just to show moves from higher ranks to here
Roserade | there is no niche for this thing. spikes sets have huge competition with chesnaught, anything else with mega venusaur (offensive or defensive) and amoonguss.
Umbreon | everything it wants to wall can beat it eventually and everything it does wall gets walled better by something else.