At this point.. doubt it would help without Wii Fit U and Wii Party U... but I don't think it could hurt.. (Hell any kind of marketing period may help.. I mean seriously.. I haven't seen one Wii U add at all... I would not have even known there was a Wii U if I did not accidentally stumble on it at Amazon.. )
Nintendo Wii by generations...
1. Wii
2. Wii U
3. Wii O U
Predictions made by gamers concerning the current Nintendo line up of games.
Pikmen 3= Little Bump to nothing. (Got Little Bump)
Wind Waker HD= Won't sell anything (The explosion happened here and at one time 4 Wii U games was in the Amazon top 100)
Super Mario 3D World= Won't help at all looks cheap. (Currently the most sought after Wii U game and continuing the Wii U increase.)