Wishlists? Many of these feel like useless additions for ****s and giggles instead of adding anything with substance.
1) Giving Mario 3 new tap taunts that permanently change your costume for the remainder of combat reeks of "Pointless waste of space". It's a cute idea, but I'd prefer one tap taunt for him instead of three, since if he gets three, why can't everyone? Slippery slope.
2) Bringing back the Brawl Wifi stage is already do-able. Just delete the training stage from your stages folder. Nothing about the stage in it's original form was really worth bringing back to the main game, especially not when we've got Training Stage.
3) PM's Distant Planet (SSE Jungle) is more interesting than the normal one now. The leaf platforms alone add a decent amount of uniqueness to the way the stage operates. The smaller size makes it friendly for 1x1 games far more than the old gigantic version did too.
4) Young Link is a waste of space. We have no need for 3 different versions of Links. Same goes for Pichu. How many Pokemon do we need before people are satisfied? If they're going to use the clone engine, can it be used for characters that haven't already been done in previous incarnations of Smash?
5) Boshi? Eh, I'd rather them stick to playable Yoshi colors and see a Brown Yoshi, since it's the only official Yoshi color not represented in Project M. Boshi isn't a very important character and to my knowledge hasn't returned in anything after his minor appearance in SMRPG.
That's enough of being "Da Pahtee Poopa", just a few thoughts that seemed a little silly to me.