You seem to be forgetting that SM3DL sold better than the Galaxy games.
The reason Nintendo went down this route is because of sales, the only thing that could hold it back is the popularity of the Wii U itself.
As far as the game goes a sequel to SM3DL was a better choice than 64>SS>1>G2>X
I still believe there will be a true 3D Mario game somewhere down the line, they basically have three pillars ofMario platformers now.







