As I am primarily a DL flyer for my domestic routes, I do have a selfish hope that DL gains some slots and picks up some more routes, but I doubt that's going to happen. Most likely, some LCCs will pick up the slots and US/AA will drop some low-performing barbiejet routes, which may make 35A a slightly less overwhelmed cesspool.
While US is almost completely intolerable, it is the dominant carrier, and is often my only choice for a NS routing to many smaller cities this side of the Mississippi. As I will soon no longer be able to credit the flights to UA, I will likely be taking a lot more connections through DTW and ATL.