lol No. Just no.
I love Metroid (well, everything but Other M and Hunters), but it has NEVER been the kind of big seller to "solve all of Nintendo's problems".
I want a new, fully 2D, HD sprite based Metroid, Metroid 5 in fact. Nothing else.
But what is going to "save" the Wii U, is simply more games coming out, and better advertising. Both will be happening this fall.