Some comments:
I for one don't mind the spaces in the corners. At first I was disappointed, but it does give the stadium a modern look...especially if that upper section has a steeper grade than the E and W upper sections. A LOT of stadiums have spaces like that. I would love if they would put some sort of walkway or catwalk connecting the upper deck endzone to the E and W upper decks. But I'm betting that there would be some liability issues there.
I have a hard time believing that the design work has went this far if they weren't actually planning on moving forward with it. If JP just wanted something to show to prospective donors, why go into this much detail? I have a feeling that some way, some how, the endzone work is going to start up after next season.
For people who don't think that this will look big-time, I disagree. It is hard to fathom what just filling in that endzone and putting permanent seats would do to the asthetics of the stadium, much less adding an upper level. This is going to look NICE and be a big seller to recruits.
Students, you may as well get used to the idea of moving to the endzone. I like the students where they are, but it's obvious that they are currently in seats that would fetch more donor dollars than lower level endzone. It sucks, but you can still affect a game there. The band will be directly across the field, so you should hear them just fine. This also separates the students a little from the general public...they won't mix with the donors in the concourse, which sometimes could be viewed as a good thing. A bad thing would be that they are right next to the visiting fans. That could be problematic.