I am based out of Vegas and am 1K on United but get stuck flying USAir often. I always call after I make my reservation and ask if I can get an aisle up near the front and have never been denied (but technically they don't have to do it). There's nothing like E+ on USAir so where you sit front, middle or back really makes no difference. As Star Gold you should board in Zone 1, you get to check a bag for free and that's about it. You won't get a comp upgrade and non-alcoholic drinks are now free.

Also, there is no IFE on any domestic USAir flights so bring your own.