It's already an issue for me personally. The main reason I don't want a WiiU right this instant is because Smash is going to be on both. You can get that, 3D Land, ALBW, and Pokemon X/Y on a portable device that costs up to $200 less if you get a 2DS. Meanwhile, the stuff I'd want a WiiU for, like Bayonetta and X, have been pretty much radio silent since E3.
Nintendo isn't doing a good job of convincing me why I shouldn't just get a 3DS for Nintendo stuff while waiting to see how the WiiU situation pans out from here. A more advanced handheld in a few years from now will only make the issue worse.
Have some time to kill? Read my shitty games blog. http://www.pixlbit.com/blogs/586/gigantor21