Neyland does have better atmosphere but I really wish we hadn't gotten hung up on seating capacity 20-30 years ago. It'd be a better experience if the capacity was a little lower.
We got hung up on expanding seating capacity over the years because the demand was there for it. When I was a kid in the 60s, it was a thrill when an envelope from UT would arrive every spring with an order form giving me the opportunity to buy season tickets OR single game tickets. Season tickets were not an option to me but I'd buy 2 tickets to one game and my grandfather or an uncle and I would leave home before dawn and drive 4 hours to Knoxville and it was one of the highlights of the year for me. Then in 80s and 90s, UT wasn't even selling single game tickets because they could sell out season tickets. I honestly thought I'd never be going to a game again.
IMO, the drop-off in demand is a combination of many factors, including losing, ubiquitous big-screen HD TVs, every game being televised, much more competition for the fans' entertainment dollars (Titans, etc), weak competition for 3 of the 4 OOC games, obnoxious behavior, longer game times (due to constant and longer TV timeouts and frequent official reviews), tight uncomfortable seating, much more crowded interstate highways (I-40, I-75 and I-24 should be a minimum of 3 lanes in each direction between Nashville and and Knoxville and Chattanooga) and, for some, cost of attendance. UT and its ticket agent are doing a better job with "flash sales" etc.
Doesn't the south upper deck sell out for big games?
I think UT has done a LOT to improve the stadium and I commend them. I hope they dropped the idea of cutting out the lower rows of the south LOWER deck to make that glass-enclosed, field-level party room for the high rollers.
If we decrease capacity, I'd like to do it by expanding seat width -- not that I need it but because the people around me seem to.
Yet to be seen what impact beer/alcohol sales will have on attendance.