So I'm curious as to what others think about the Empire, do you think it will survive another game or collapse?

Personally I think it's going to be replaced by something new entirely some evidence being in Morrowind when you meet Tiber Septim he hints that them Empire is old and flawed.

"The Emperor is getting old. Don't know how much longer he'll hang on. So is the whole Empire, for that matter. Getting old, that is. The Emperor and the legions have held the Empire together for hundreds of years. It's been a good thing, by and large. But maybe it's time for a change. Time for something young and new. What? No idea. Because I'm old. Old dog doesn't get new ideas. But maybe young folks like you should try some new ideas. I don't know. Could be messy. But change is never pretty."-Tiber Septim Aka Wulf

It also would help explain why Talos chose not to be involved in the Skyim civil war.