Well personally they should just remake Metroid 2 as a 2D sidescroller for the 3DS and do something completely new for the Wii U outing. Metroid 2 so far is the only game without the space pirates and it should stay that way.
They really need to expand the Metroid brand by having a Galactic Federation type of spin off maybe focusing on soldiers of the Federation and making it an FPS well still making the main games of Metroid an FPA.







