True, more games the better. But more variety would make more people happy and more strategy games would mean some additional 3rd party developers which hopefully would be tempting to Nintendo.
If we're talking about what's good for nintendo then...I would say we're okay with the strategy games for now. With a big name game like Pikmin 3 coming out, nintendo should be able to carry the weight. (if there is a specific game you think wii u needs, I probably don't know it, I only know nintendo franchises)