Metroid, he has perfect right to complain. PMBR wouldn't understand, since this doesn't apply to them, but any changes you guys make and release for demo 2.5 are basically set in stone for the rest of us for a healthy 8 months or more. It's not like, for us, "Oh well turns out it wasn't a good idea after all, good thing it takes like 5 minutes or less to fix and distribute to the players."
So I would ask PMBR not whether we will like it, because that's not really the issue. Charizard came off to pretty much everybody as a character that was lacking. The real problem is "Is this objectively better than what he had before? If not, why on earth would you nerf him? If so, please explain, 'cause we just aren't seeing it." A demonstration of using the new move (using it better than the old nair) in a game on a livestream preview would suffice, I imagine. Since your playtesters all loved the move, and obviously were comparing it to old charizard's nair because that should be how playtesters work, by comparing versions of the game rather than just looking at things in a vacuum, I could imagine it being okay to hold judgement until... we see a livestream. But asking us to wait for the release is equivalent to telling us to just get over it because it's not gonna change. Because once it's been there for that long, however long demo 3 or w/e takes, and other issues are discovered, this one will just blow to the wayside in the minds of PMBR as "another minor issue that doesn't need to be addressed" unless we make a big deal of it now. And btw, it's not just this one thing or that one thing, it's some of the design philosophies changing things like this indicates of the PMBR that makes some of us worried. Not to dismiss how well PMBR has done 95% of the time, but I feel there's nothing wrong with pushing for a healthy 100%.