Sarki Soliloquy
Smash Champion
If the roster's going to be the same for both versions, then wouldn't we see stages from series having reps exclusive to Wii U and 3DS? Like if we have a Mario Galaxy stage on Wii U due to the aforementioned title released on a console, we have stages like that NSMB/SM3DL stage shown on 3DS.
I'm also not concerned on competitive ban and legal stages. Final Destination, Battlefield, Wrestling/Boxing Ring, Arena Ferox, the Animal Crossing stage(s), Garden of Hope, Skyloft, the Nintendogs stage, and the Pilotwings stage have been shown to have no hazards thus far. I expect some of those stages to have no changes to that. Things could change in the wake of Gerudo Valley's fire hazard, but we'll see.
I'm also not concerned on competitive ban and legal stages. Final Destination, Battlefield, Wrestling/Boxing Ring, Arena Ferox, the Animal Crossing stage(s), Garden of Hope, Skyloft, the Nintendogs stage, and the Pilotwings stage have been shown to have no hazards thus far. I expect some of those stages to have no changes to that. Things could change in the wake of Gerudo Valley's fire hazard, but we'll see.