I'm always after Nintendo games, but I'm still a bit hesitant on the Wii U right now, mostly due to three factors:
-I'm waiting to see some more innovative uses for the GamePad that'll allow the platform to do things you can't do on the others.
-I'm very much concerned that any console-exclusive shooters that make their way onto the Wii U won't support the Wiimote + Nunchuk combo. IR pointer aiming is probably the best thing to happen to FPSs since mouse aiming; still less precise, but more immersive. While the Wii U certainly supports the old controllers, remember that even the premium package only has the GamePad and developers tend to only support things that consoles come with out of the box.
-I have a few games downloaded from the Wii Shop Channel already, and I don't know how they'll carry over to the new console just yet.
As for tech specs, I'm not really concerned there because that's what PCs are for, and if you look back over the history of consoles, the global market victor for each generation has never been the most powerful console. (Well, maybe not quite 4th-gen with the SNES depending on whether you count the Neo-Geo as being direct competition or not, but that's the exception overall.)