The truth of it is that a sidescrolling Metroid would have been met with a loving embrace.
Nintendo eventually gives us the IP we want, but usually first on the handheld (Many Zelda 3DS games, Metroid Prime: FF) which we don't want and usually a little after another console spinoff we never asked for (Hyrule Warriors, Metroid: Other M)
I predict NX launches in 2017 - not 2016