Why is anyone even worried about the next Smash Bros? It probably won't come out until next gen nintendo...
And I can easily see Little Mac, Geno, and Megaman in the next Smash Bros, but Layton? I think not. MAYBE, an assist trophy, if that. What will he do? Solve a puzzle to break your shield? Throw pens? It makes no sense, and is 100% propaganda.
Fighting games are going downhill... It's like everything after SF4 no one cares about the gameplay and design. Anything to sell a quick buck. I'd be dammed if there will be another good fighting game. Actually, seeing the pig crap (in comparison to melee) that Sakurai produced I wouldn't be surprised by this move. But in the end, LAYTON? No.