I like the idea of incorporating CVC's, actually. That could be really unique. One stadium that I love is that of the San Francisco Giants (AT&T Park). It has a cut-out that provides an awesome view of the bay. I don't see why something like that can't be incorporated.
So all of this stadium talk was a dream of mine as I was messing around on Google Earth. I think the same could happen at the Statesman site (albeit without the perfect location for a train station on tracks that already exist). There are probably other places where it could work also (especially outside of the immediate CBD), but I would love to see something downtown - and something that is multifunctional.
Edit: I especially love the idea that was put forth by lzzpjb about Stanford Stadium. Sinking a good chunk of the stadium could make even a fairly traditional design fit within the CVC. Although I guess it would also depend on the water table, etc...and with our luck, they'd probably find a cave system with some little creature that we've never met before.
Not saying that's not important, but it would push pause on a stadium, haha.