I don't see UAL "perishing" or filing Chapter 11 in the near future. They have made some moves that will help them for years to come most important being the Star Alliance and the one with Lufthansa.
On the international front United will hold its own, on the national market as mentioned before one can expect to see more RJs and elimination of unprofitable route.
One possible restructuring is spinning of the international and domestic operations, however this will not be an easy task.
Lets see- only time will tell.