I love this post! Thanks for taking your time to write all this up. =D
I have a few comments and questions, so here I go...
The only difference with parasol now is drifting is automatic like in other Kirby games, instead of it being done manually. Another difference I found with parasol is, the dash attack for it no longer gives invincibility frames. Kirby is vulnerable from directly above, or behind him.
Just wanted to point this out... In the first sentence, you said that "only difference is X". Right after that, you state another difference. I know you just added that part in, but you should probably tweak the first sentence to say "one difference".
BBB - Stone hop <tap b rapidly> (This one is unlisted)
Stone got a bit of an upgrade but it wasn't listed in it's profile!
If you rapidly tap b when transforming, Kirby will rise into the air a little bit and smash down with a shockwave. Normally Kirby just transforms while on the ground. Stone Smash also does 5 less damage than it did in KSS.
I think Kirby just rises a little when coming out of Stone form. Thus, pressing B right after coming out of stone form would lead to the Stone's air move. Pressing A immediately after coming out of stone form should make Kirby puff up (which happens when you jump while in the air). This is a really good trick, but I don't think it's actually a move of it's own. It also explains why the move isn't listed in the profile. That said, I still think it should be listed here. It's an amazing trick, and it makes stone much more useful. =D
Also, I had a question about Turbo Stone. What does it do? >,>... It seems to be the same as holding left/right and pressing B, except you dash instead of walk. If you do slide farther, the extra distance is unnoticeable. The hit box also seems to be the same.
Hold B - Slash (unlisted)
Hold B Longer - Quad Shock
I have a question about this. I tried holding B for various durations and I always end up with a normal slash. Am I doing something wrong?