Where are you people coming up with some of this stuff?
ASU always has, and always will play at SDS. College football should be played at the stadium
on campus. Students can walk to the game, alumni get back to the university, etc. As excited as the Cards are to have their new stadium, ASU is just as excited (well,
almost) to get their stadium back full time. It's like having the in-laws move in temporarily. Sure it's fun at first, but it gets old quickly.
As for SDS itself, it is a dump compared to the new stadium. But compared to other college stadiums, it is on par, if not better than most. They probably will renovate it, but they're not going to lose 20,000+ seats by upgrading concessions and restroom facilities.
And finally, the Fiesta Bowl will never return to SDS. Remember that several cities (Houston, Atlanta, etc.) were trying to lure the Fiesta Bowl away with the allure of playing in a modern stadium. The prospect of losing out on the economic engines that are the Fiesta Bowl, BCS championship game, and the Super Bowl, helped to get the stadium deal done. I believe they're part of the TSA, but in any event, they're never going back to SDS.
The Insight Bowl is moving to SDS from Chase Field (Thank God), and there they'll stay. For a lower tier bowl game, SDS is just fine, and the field at the new stadium would take too much abuse from 2-3 bowl games that would take place in a span of 10-14 days, not to mention the Sunday Cards games.
Oh, and thanks for the pics!