I do wonder if Mario Maker will make the New Super Mario titles unnecessary in the future. I mean, we now have a tool that faithfully recreates Mario games. Unlike Sonic, Mario isn't so dependent on new stage gimmicks and intricate stages filled with loops and high, mid, and low sections. Mario, from the NES through to the 3DS, has been pretty simplistic. NSMB2 had to rely on an over abundance of coins to keep things fresh. NSMBU was a little more unique, I guess, with some interesting new environments, items, and the crystal cave stages. But I just can't see another NSMB console release being all that exciting having seen Mario Maker, unless they really go in a radical new direction (which Miyamoto has been suggesting).