I disagree with some of your predictions though. Then again I'm not too much into going far with predictions, so I'm not even thinking about what each studio is probably doing and stuff. In the end, I don't think there's any chance we'll see a Twilight Princess HD on the Wii U at this point.
Also, I'm pretty sure Platinum Games completely took over development for either Project Giant Robot or Project Guard... or both.
You may be right. Some of it is just wishful thinking
Twilight Princess HD... I'm just guessing what they're going to ask Grezzo to do now that they've finsihed their N64 Zelda remakes. Are they going to let them work on their own Zelda game? That would have to mean they'd start working with EAD 3 and those guys have enough on their plate at the moment. So I'm guessing another Zelda remake, and there's not a whole lot left to remake...
EAD 5 is a bit of an odd development group. They haven't actually made a single game without collaborating with another developer (even for Steel Diver), so you are probably right about Giant Robot and Guard, but that would change little to their normal output. Maybe this means we will still get a Steel Diver game for WiiU (HD version?), but I honestly couldn't name anybody who would be interested in that. I though Steel Diver was okay, but it's not a franchise I would like to see become a main staple.