One other thing that would really improve other metagames is more active moderation. Obviously I'm looking at the BH threads in particular, but even like AG could use some more post moderation; yes, it was able to be brought back on topic, but metagame threads shouldn't be somebody's personal RMT dump or whatever that was. There's obviously ways to go too far, so it would require some care, but preventing what can only be described as shitposts should be, in my opinion, considered a positive end result.
noh rulez in ay jee
I agree strongly with Quantum Tesseract (is that who I quoted? yes it is. cool no tag then.) about the issue of bans. Other Metas shouldn't be looked at as ou with something pasted over the top, in a meta like Sketchmons or AAA or even BH or Camomons or whatever, the mechanics of the game have been changed, and I don't think that looking at OU as the base form of the meta that can be referred to with bans is very helpful theoretically. I actually think Sketchmons is not the best example for this argument, because it doesn't actually give access to the move and rather gives access to Sketch, and there is an in-game precedent for a move not being sketchable.
If you take AAA however, saying that Medicham should have access to Pure Power because it does in OU ignores the fact that we are now in the OMverse, where it doesn't matter what ability you have in game, you can have almost any ability.
The flipside of this is what is actually practical to do. I think this debate shouldn't be allowed to die just yet, but neither should hasty action be taken. Because honestly, we're here to have fun, and if nobody wants to make the switch to a new ban philosophy then whats the point? If nobody wants the unreleased megastones to be banned then whats the point woops how did this get in here