It has been a long while since I posted here but I got so excited when Mega Man was announced that I thought I'd take a crack at a roster prediction again.
I'm going to be very conservative with this one.
There's 41 slots on the select screen but 45 move sets.
To avoid having nothing but first Gen Pokémon, Mewtwo could be the new form and Pokémon Trainer could have Pokémon from different regions, preferably 3 different regions instead of all from the same region.
The only cuts I made from Brawl are Toon Link, Wolf, Lucario and Ike. If I were to cut one more in favor of a newcomer it would probably be Lucas. I've had people suggest to me for Dedede, R.O.B. and G&W to be cut but I don't think that's going to happen nor do I want it to.
It's all the same to me if Snake and Sonic do not return but I kept them for now.
If I were to implement having unique characters on each version I'd consider having Ness on the Wii U and Lucas on the 3DS and as much as I want Isaac on both they could put Shulk on Wii U and Isaac on 3DS likewise with Chrom and Ike for 3DS and Wii U respectively. They could have at least 1 different Pokémon rep on each version as well. Wii Fit Trainer could be on both but maybe makes more sense to just have on Wii U and 3DS could have AR Man or something equally bizarre and unique to portable systems. Perhaps Professor Layton would be a 3DS exclusive 3rd party fighter as well.