What don’t you like about it? The SNES controller was one of my favorites but maybe it’s just because that was my favorite generation of gaming. Is it too small and cramped? Not ergonomic enough? I personally find the Xbox controller too large, but maybe I just didn’t play with one enough.
Each game needs to have a custom profile created to render in 3D. From the linked article:
3dSen is an emulator that lets you play 2D NES games in 3D. Its programmers have to create a custom profile for it to work its magic on each game, which means there are currently 100 supported games, including Contra, Super Mario Bros, Batman, Castlevania, Bubble Bobble, and Gradius.