I agree with u. Megacham can even be OHKOed by a meteor mash from Mega Metagross.
252+ Atk Tough Claws Metagross-Mega Meteor Mash vs. 0 HP / 4 Def Medicham-Mega: 259-306 (99.2 - 117.2%) -- 93.8% chance to OHKO.
I think that shuckle is good, until you destroy it's sash. Super-Effective hits will only let Shuckle set web, but before it gets low on health, shuckle can hit hard. I nominate Shuckle for B-, because of the ability to set webs and rocks, infest and with not that many rapid spinners other than Excadrill (Which is taken out by the sheer amount of Landorus-Ts), the hazards will stay for the entire battle, most likely. So shuckle is ok as a mon, before it gets low on health with its lack of active (and passive) recovery if not equipped with leftovers. and that's why I nomm it for B-. (I am not the most experienced, but from fighting battles in not only OU but in Ubers where shuckle and smeragle are the bane of the tier, shuckle is just ok. and deserves a boot to B- with its doggy cousin, smeargle.)
Edit: Shuckle doesn't need a sash, sorry.
In what world does base 10 attack and SpA hit hard? Why does a suicide webs setter need lefties? And why do you think that it's somehow above B- right now? It's not even ranked.
Also, as far as your previous comment goes, arguing that Medicham's lack of bulk prevents it from S when Greninja exists or that 100 base attack doesn't hit hard when Pure Power exists is just dumb.
Anyway. Since Starmie didn't end up with a raise in the recent update, I'd like to echo the nomination for it.
Most everything that could be said has already been said, so I'll just reiterate some points in its favor -
1. Decent hazard control in a meta with mostly shitty options. E: This is the primary reading for it to rise. Many other points are just enumerating on why it's decent.
2. Reliable recovery so it can spin throughout the match.
3. A great speed allowing it to outspeed the crowded 100-110 tier, which means it's more likely to get rapid spin off.
4. A great ability in Analytic, which, when combined with excellent coverage options such as Ice Beam, Thunderbolt, and HP Fire (as well as more niche options like dazzling gleam, power gem, grass knot, and flash cannon), means that it can severely punish switch ins (looking at you, Ash-Greninja).
5. Besides Rapid Spin, an expansive support/utility movepool, including T-Wave, Confuse Ray, Trick, Reflect Type, Icy Wind, Scald, Skill Swap, Trick, and Trick Room.
6. Passable 60/85/85 bulk.
Edit:
7. Outspeeds and KOs the most viable (according to these rankings) ghost-type (spin blocker) in Gengar.
8. Beats most common SR setter, Landorus-T, and beats the most common spike setter, Ferrothorn, on the switch with Analytic HP Fire.
9. Has an otherwise generally favorable match up against most other hazard setters - can carry thunderbolt for Greninja/Skarm, ice beam for Lando/Chomp/Ground-type Gren, hydro pump for heatran, psychic for toxapex. It outspeeds (excepting Spikes Gren who rarely carries dark pulse anyway) and KOs (2HKOs in the case of SpD Skarm and Toxapex) all of them.
10. Phero is gone, and with it Starmie's main spin competitor and main threat of Bug STAB. Dark STAB is rare right now, with only one A/S Ranked mon carrying it. Ghost is slightly less so but still rather rare, and as pointed out before it outspeeds/KOs the most relevant Ghost-type.
Basically, it actually matches up against most of the relevant mons that it wants to beat to do its job, and being the only spinner and one of the few hazard removers in general with recovery is a boon in a meta where you often take 30%+ just from switching, due to hazards. Add to that Phero's ban, and you have a mon with a sizable niche worthy of B-.