Can we bring back Saffron City so we have a Red/Blue stage? A redesign of that stage with a slew of classic Gen 1&2 music would be great for the Wii U.
Being able to adjust what transformations occur in an options menu does sound pretty cool.
When SEGA said that it was unlikely for Sonic to return in the new Smash but stated that they'd like to see it happen, a few months later: Sonic confirmed.
I'm seeing a pattern here.