(1) it is very common for teams to complain about the sight lines in dome setups. if this is the first you've heard of it, then you haven't been listening. the same happened when the bulls opened united arena - the lower bowl didn't have as much of an incline as the other nba arenas, and teams had to get accustomed to it. depth perception through the clear backboard has something to do with it. also, the seats are designed to see a full length football field. they're not aimed at only half of the field. thus, sightline issues.
(2) syracuse is the home team. they should be used to the carrier dome.
(3) jerry's world is a dome. a dome with a retractable roof.
(4) the stadium was estimated to cost $1B. that's a lot more than the $475M you account for in nfl and city money. and how often do construction projects (especially this large) meet their budget? i also don't think jerry is planning on dropping a half billion on this stadium - but maybe he is.