WiiU is a platform of secondary importance to publishers and tertiary importance to developers.
I think we'll see WiiU support similar to how COD:Ghosts came to the platform. Development efforts focus primarily on other platforms while the publisher tries to line up an additional studio or small line of staff to port the game using pre-existing assets of the game. We hear nothing for months and assume it's dead then voila! It comes out. WiiU may miss out on titles of larger scope, but I think the fact a Watch Dogs port is still alive shows fairly complex games can be brought to the platform if they sell well enough.
I think 3rd parties understand that the WiiU represents a different market segment and a fair number of new players to a given franchise. To us, the sales seem pitiful. But business folks ears perk up at the prospect of raising sales another 1-10%.
Fun fact: ACIV is the 12th most downloaded all time on the WiiU eShop and the #1 most downloaded 3rd party game on the WiiU overall-- including indies. And it still sells full price there.
I predict NX launches in 2017 - not 2016
