If you like the way Sonic plays in Adventure this is almost a complete port of his moveset. And for those of you who like the way Vanilla Sonic plays in SRB2 but feel he is a little too fast or slippery, then this mod is perfect. Sonic carries over his full moveset from SA1 with all the flair of SA2, it would be nice if you could use the somersault as well, but honestly it probably wouldn't get much use, the somersault jump on the other hand would probably be used often. And the magic hands, could probably work as a way to break down walls which cant be broken by the bounce or spindash. They aren't necessary and it doesn't detract from the mod to not include them, but I do think it would be a nice addition.
And if you wanted to, you could probably separate the mod into an SA1 and SA2 mod, the only difference being the slight change in moveset. I don't really think its necessary to alter the sprites aside from maybe adding the Soap shoes. Either way I really enjoy this addon, kind of makes me want the other Adventure characters in the game, but honestly they don't play too differently in comparison to the Vanilla characters, the only things I can think of is Tails and Knuckles having melee moves, and the two of them are a bit more floaty in the air since it seems like they fall to the ground slower.
Compatibility with other mods, mostly! Many mods use custom buttons that could break if SA-Sonic's taunt behavior intertwined with them. ( Btw, the 1,2,3,4, etc buttons are already used to select specific voicelines beforehand! )
If you're using a controller, I'd suggest binding "weapon previous" and "weapon next" to the bumpers for easy taunt access.