- What do think was the main/inspiring idea/goal that Ben Gay had when building this team?
It looks like he built around an unorthodox Pokemon that offers a surprising amount of defensive utility - Cofagrigus. Cofagrigus deals with a lot of the physical megas that rely on their abilities for damage, (after attacking cofag once, metagross, lopunny, pinsir, dd altaria, etc are completely walled) and it spinblocks and has tspikes which are all very useful qualities for a stall team. The team looks like it is based on spreading status and wearing the opponent down with hazards and residual damage, and cleaning late game with CM mega latias, who blanket checks a lot of special attackers the rest of the team is weak to.
- Is there a discernible core that he tried to build around?
Not sure, maybe Cofag / Chesnaught / Heatran to stack hazards while keeping good defensive synergy, with the rest of his team patching up weaknesses of the other members. Latias handles quite a few special wallbreakers (Keldeo, Zard Y, and Landorus-I) and with reflect type it doesn't fare badly against the Pursuit trappers they are commonly paired with, which is essential on this team. SDef Hippo checks electrics, Volcarona, Diancie, and Gengar (which would be a massive threat otherwise), and finally unaware Clefable handles Manaphy and some other random boosters that could potentially overwhelm the rest of this team, while spreading more status and crippling faster mons that like to switch into or stay in on unaware Clefable (for example, stallbreaker Tflame and Gengar).
- What are the strong points of the team?
It matches up very well against most of the offensive metagame and seems very hard to break without having specific dedicated stallbreakers. Most of the things that commonly trouble teams like this (Lando-I, Manaphy, Metagross etc etc) are handled easily by this team. The team also uses two mons that blanket check a LOT of threats on both sides of the defensive spectrum (Mega Latias and Cofagrigus) and I think that they fit perfectly on this team.
It's hard to discern any huge weaknesses in the team that aren't inherent to most stall teams in general. The biggest threats to the team seem to be Mega Gardevoir and Life Orb Kyurem, as they can threaten to OHKO or 2HKO every Pokemon on this team and you'd have to keep tspikes down or paralyze them with Clefable to have a chance. Certain Zard X and Talonflame sets seem like they could potentially be annoying since Hippo is specially defensive and you have no real way of beating stallbreaker tflame if it gets burned, but you might be able to play around that. Goth is a HUGE annoyance to this team, but there's not much that can really be done about that. Both SD and stallbreaker Gliscor look like they could be pretty annoying since you don't have ice beam on Clefable. Having no way to remove hazards on your side of the field can maybe hurt in some matchups too, since 5/6 mons are vulnerable to spikes + tspikes. You do have a very reliable spinblocker though, so winning the hazard war against some of these teams is feasible.
- How could his use of certain EV/moveset twists help his team vs specific threats or archetypes?
Well, Thunder Wave on unaware Clefable is pretty unexpected and probably works in your favor a lot of the time, since they are usually wish+protect or calm mind. Having another way to spread status and impede faster threats that like to switch in and beat Clefable regularly is obviously much appreciated on this kind of team. Running no rocks on Hippo has some surprise value as well, since at team preview that looks like it's your rocker and people may assume you don't have WW or Edge, and assume you are a scarfed or stallbreaker Heatran. I know the Latias's spread is for Garchomp, and certain Garchomp sets could certainly annoy this team and stop Latias from sweeping so that makes sense. The rest of the spreads look pretty straightforward, but I can't for the life of me figure out what the Chesnaught spread does.
- How does he use some underrated threats to give his team an advantage?
Cofagrigus seems to be the main one, this set seems very hard for most offensive teams to break and most offensive teams tend to hate t-spikes too, so by default you have a pretty great matchup there. It also gives you a spinblocker with a lot of longevity, which is cool as a lot of teams are opting to use spin over defog nowadays. I've already talked about some of the surprise factor in the previous sections so I don't want to repeat myself anymore than I already have :x
- Do you think this team could shine in the ORAS Metagame?
Absolutely, it has a lot of good matchups and seems like a lot of fun to play. Thanks for sharing it! Sorry if I overlooked anything major ._.