Yea, I'm worried about a few of them.
MCL tears typically aren't that bad. the majority of them heal up and don't require surgery. The fact that they let Kam play at all would lead me to believe it should recover 100%
Thomas's injury does worry me. When you get a severe shoulder dislocation, and it tears the labrum like that, sometimes that shoulder never comes back right. The shoulder is a funny joint with a ton of range of motion and can be finicky about healing up 100%. The biggest injury that gave guys I saw while in rehab in the Marines the most difficulty was the shoulder. Most of us have heard that when you dislocate a shoulder, it will always pop out easier again. Typically you can alleviate that with surgery, but sometimes it just doesn't come back right. Thomas flies up and lays hits with his shoulder a LOT. If things don't come back right, it could alter his style of play. Big Sky Doc could probably shed more light on it than I can.
Paul's ACL is also troubling. I re watched the play, and it didn't look like the knee did any major tweaking or twisting. I'm honestly surprised after watching that, that he tore his ACL at all. So, either the surgery wasn't that great in college, or it was weak enough that it tore easily when he landed on it. Or it was just a freak thing.
I don't know that the failure rate on those ACL grafts are, but I was told that some do fail, no matter how good the surgery or rehab went. Maybe this happened to Paul, but tearing that same ACL twice is really troubling. It's sad, as Richardson was really coming along and I think would've made a big difference in the big game.