This is a weird question, because it's highly improbable that any of these things will be lacking from Zelda Wii U. I think the NX will have better AA, and may run at 60fps, but that's it. Zelda Wii U isn't texture demanding because so much of it is cel-shaded, but I'm sure that Zelda NX will have better textures, again, not that it matters.
The NX version might have small features specific to the NX we don't know about yet, but they will likely be tiny social things related to new NX platform features like achievements or something. Nothing as drastic as a smaller game world. I'm 100% sure the NX is keeping its second screen, so that feature is staying too.
All that being said, if I'm right about Zelda NX running at 60fps, I'm skipping Zelda U.







