Animal Crossing sells & they can now take advantage of Miiverse.Do we really need another Animal Crossing game? Hasn't the concept basically been perfected with New Leaf? What could possibly be gained (besides graphics) by bringing it to Wii U?
Surely this is a case of resources better spent elsewhere? (F-Zero U, Mario 64 U, New IP?)
As for the examples you mentioned, F-Zero doesn't sell as well (sadly), they're likely saving their next 3D Mario for the NX (if it's a console), & we just got Splatoon.