I don't know the answer to your question. And I don't know what your mod will be. But I always thought it'd be great to see someone mod NSMB2 and replace Mario and Luigi with Wario and Waluigi and then instead call the game Super Wario Bros. I always thought that NSMB2 missed the mark, in how the game is focused on collecting as many coins as possible but you play as Mario and Luigi, and who do we know in the Mario universe that has always love money and treasure? Wario of course. Ideally I'd love to see the game get an even bigger overhaul by replacing the Mario enemies with enemies from the Wario Land series. Of course that'd be a pretty dang big mod, that I'm not even sure could truly be possible, but I always loved the idea of it and thought it'd be pretty cool to see.