Well, my opinion starts on the Wii U is that it doesn't fit into the "console" section. It is promoting more on the handheld device using the console as some sort of "hotspot" for that specific controller (and probably only controller). This situation to me is like the "is it a smartphone? is it a computer?" ad

The only thing I would guess about the DVD/Blu-Ray problem is that games for it will not have so much content in them. From what I heard, Blu-Ray can read more data and makes great use to package data all together than the standard DVD players.

One other thing that bothers me is the HD promise while you are not using the TV hooked up to the console and that you can still play your game with the same format on the new controller. I think this is a bit of a huge promise that can be too true with how the streaming videos can be interrupted when moving too much and knowing when to activate that ability.