Also, ideas on Mew.
I think it would be an improvement to the bulky support set to include the chance to roll a pivoting move or a few different attacking moves. This is Mew, which can learn any TM and is supposed to be unwallable by immunities, yet as soon as it throws rocks off, you know you can bring in a dark-type with impunity and just wall it. A Krookodile should not be able to switch in fearlessly to a Mew under any circumstance until it's revealed all four moves; I think this artificially hurts Mew's win rate.
I would suggest adding U-Turn, Play Rough, and Hydro Pump to the movepool for that set. It doesn't change much, but having the possibility for two attacks, including attacks that hit on the physical OR the special side, will make that Mew set harder to wall, which should help its winrate.
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I would also suggest expanding the pool of moves for the other two roles. The Setup Sweeper has SD and "Brave Bird", "Close Combat", "Flare Blitz", "Leech Life", "Psychic Fangs". I don't think there's a good reason to not allow Play Rough, Gunk Shot, Earthquake, Stone Edge, or Liquidation to spawn as well (Close Combat remains a forced move). It makes Mew harder to wall which, again, should help it.
It could also do with the addition of either Trailblaze or Dragon Dance (the latter obviously replacing Swords Dance). Mew is fast, but not THAT fast, and DD as an alternative to SD makes it much harder to predict.
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Finally, the fast bulky setup ("Aura Sphere", "Dazzling Gleam", "Earth Power", "Fire Blast", "Nasty Plot", "Psyshock", "Shadow Ball") is great and all, but it could really, really use some more moves. to make it harder to predict what coverage it has. Thunderbolt, Hydro Pump, Flash Cannon, Leaf Storm, Draco Meteor, Power Gem, and Flash Cannon could make it much, much more difficult to predict. When I see my opponent show up with a Mew, I should be wondering "oh man, which of my pokes does this thing not have super-effective coverage for?", and I think it'll drastically improve Mew's chances to make it harder to plan around midgame.
Just my thoughts, thanks for listening.