If Nintendo was smart they would hire the guy (or make their own) Super Mario Crossover...using all power ups and some new Mario characters.
I love the idea. You could download one game for free Super Mario Bros. Then buy the figurines for bonuses. Then buy additional games on the eshop to interact with all the figurines. They could just call the game Nintendo Crossover or something.
Add maybe have Super Mario World, Super Mario Bros, Kirby, and Zelda 2 as initial games for the launch lineup.
A unified graphics system would have to be 3D based, but they could do something Cell-shaded with some interesting texture work.