Yeah. Claire's character is pretty pointless right now. Maybe the finale was a send off for her, I don't know. It doesn't surprise me though and I wouldn't be surprised if others decided to leave.
IF Hayden leaves the show or her role is limited then,
HRG is gone or extremely limited. He's gotten kind of old anyway. Suresh probably won't be in the next season but I wish they would bring him back and find some way to get rid of his stupid powers because him as the professor type character was more interesting IMO.
I seriously think the only characters NBC and US should worry about losing is Peter, Matt, or Sylar. Lose any one of these three and it's all over because they are quality actors and Matt's character has been completely underused up to this point.
I really could do without Claire/HRG/Hiro/Ando right now. I liked Hiro in Season 1 until I realized his story/mission never really reaches a climax. It's like they build him up in 5-8 episodes and then NOTHING. Just a weak climax for him. Like in the beginning the whole sword story (dragon I think?) the hero who ended up being Adam, etc. It was a let down for me.
As for Ali Larter, I think she is gone. Going from Niki Sanders to Tracy Strauss was one of the dumbest ideas Heroes ever came up with and she's been GONE this whole season so to speak. Same with Micah. Suppose he's gone too?
Anyway, I enjoyed some parts of the finale but most of it was flat out tedious and predictable.
So, let me get this straight. Next season there's a possibility that we might not see a lot of people returning. So here's a guess who won't be back:
Tracy Strauss
Claire Bennet
Claire's Lesbian Friend
Noah/HRG
Noah's girl friend (hell I forgot her name)
Micah
Suresh
Nathan (we know this already)
Samuel (what's the point?)
6 actors were part of the original cast. One we know is gone for sure, and the rest are a possibility.