I also would like to see luxury suites added. I think they should go in the open-air area between the lower and upper sections. Give you a much better view than the blimp-cam look from way up top, too.
Also, what about actual seats? I know they have them between the 35's on the west side. What about putting them all throughout the lower bowls? And not those aluminum seats either. Nice, shiny red ones with drink holders. THAT would be an upgrade that wouldn't cost an arm and a leg, and could be paid for with those new luxury suites.