- I am considering a ban on aerilate and pixilate (not refrigerate)
I agree and like what most of what you said, but I'll have to step forward and be the first to pose a counter-argument.
Removing Pixel and Air from -ates would certainly be helpful, but there's two issues with not removing Fridge.
1) -ate clause is already an attempt to hamper the abilities without removing them, and only to some success considering they're up for suspect yet again. Keeping Fridge would be doing the same thing twice, trying to break -ate's legs (again) without actually just killing it. This is the second time we've identified -ate as a problem. As such, it'd be better, IMO, to just rid ourselves of it and be done.
2) Fridge is still pretty strong. I think this would be easier to break down it down into sub-bullet points...
2a) Defensive Pokemon will be able to relax a bit, but you're still going to need your mandatory Fridge-check/counter because, while they might not be the mixed monsters Pixel Diancie and Air Ray are, Kyu-B's Boomburst is nothing to scoff at if it hits any non-resistant Pokemon, even uninvested.
0 SpA Refrigerate Kyurem-B Boomburst vs. 252 HP / 128 SpD Mega Audino: 169-199 (41.2 - 48.5%) -- guaranteed 3HKO
Just an example, not going to litter my post with a thousand calcs against every standard, niche, and theorymon. And I know, not quite a 2HKO but... lay down some rocks and the pressure is on. Registeel still stops it cold, but if we're all forced to run it still, then not a lot has changed. But additionally, Kyu-W's Extreme Speed, while not nearly as strong as Kyu-B's Boomburst, is still strong enough to pick off whatever survives a Boomburst.
252 SpA Refrigerate Kyurem-W Boomburst vs. 252 HP / 128 SpD Mega Audino: 268-316 (65.3 - 77%) -- guaranteed 2HKO
0 Atk Refrigerate Kyurem-W Extreme Speed vs. 252 HP / 128 Def Mega Audino: 97-115 (23.6 - 28%) -- 89.9% chance to 4HKO
Again, just an example, and not an assured 2HKO without some hazard pressure or a LO or Nevermelt Ice, but you see my point, I hope. And then... we'll have other potential abusers. You thought Mega-Ray won't be using -ate after losing access to Air? Think again.
0 SpA Refrigerate Mega Rayquaza Boomburst vs. 252 HP / 128 SpD Mega Audino: 162-191 (39.5 - 46.5%) -- guaranteed 3HKO
252 SpA Refrigerate Mega Rayquaza Boomburst vs. 252 HP / 128 SpD Mega Audino: 187-221 (45.6 - 53.9%) -- 46.9% chance to 2HKO
The power reduction is significant over Kyu-W's Boomburst, yeah, so it'll likely be more of a niche pick. But it's a heck of a lot faster and the damage is high enough it can still drop a bunch of pressure onto defensive walls with Boomburst. Let's not even talk about...
2b) Offensive Pokemon. Fakespeed wrecks anything that's not bulky, often in two hits.
252 Atk Refrigerate Mega Rayquaza Fake Out vs. 0 HP / 0 Def Mega Mewtwo Y: 97-115 (27.4 - 32.5%) -- guaranteed 4HKO
252 Atk Refrigerate Mega Rayquaza Extreme Speed vs. 0 HP / 0 Def Mega Mewtwo Y: 194-229 (54.9 - 64.8%) -- guaranteed 2HKO
Mega-Ray would come just a bit short. And, I know I gave this one 252/252 offenses, but I can't predict how a future Fridge Ray would have its most popular build. Either way, that's the weakest, niche pick of the three. Kyu-B is the main one talking about here since Kyu-W would be uninvested and mostly using E. Speed to pick off those that just survived Boomburst. And... I'm confident I don't need to post numbers showing Ytwo getting cleanly 2HKOed by standard Kyu-B. Or, really, most low to mid-bulky Pokemon in general. Heck, Kyu-B has enough bulk that stuff like 252 HP Regigigas struggles to avoid a 3HKO if it can't OHKO Kyu-B or neuter it with status.
2c) So, basically, to sum up point #2, defensive and offensive Pokemon would still be under a lot of pressure, largely in the team building phase. You'll only ever encounter one Fridge Kyurem, or niche non-Kyurem pick, per game, but you still need to prepare for them all lest one either wreck all your walls, wreck all your offensive Pokemon, or both. Uninvested Boombursts from Kyu-B are still scary strong, Kyu-W's Boombursts will still murder most walls not named Soundproof or Registeel, and Fakespeed will still pretty much auto-win any match-ups against middling or worst bulk offensive Pokemon.
Bonus 2d) If you thought you could just plop down Regenvest Kyogre and call it a day vs these, you're forgetting Kyu-B's lord and savior, Bolt Strike. I've not run the numbers, but I imagine Kyu-W's Seed Flare would also scare off most, if not all, Kyogre and other Water-types, particularly Soundproof Mega-bro.
So yeah... can we stop breaking -ate's legs and just kill it?