It's so hard to choose just one because it seems like no character ever gets a real ending on this show before they leave!
Before the end, I'd like to see:
Rachel: In a recent interview, Mark claims she got a "riding off into the sunset" moment. Um... no. Getting slapped with divorce papers is not a happy ending, Mark. She needs to earn redemption with Mouth and Brooke and be a part of the wedding.
Karen & Deb: As messed up as their relationship was, it was a big part of the show and I'd like to see them interact again. Or, at least tell us where Deb is.
Sam: Am I the only one who finds it odd that she lives in town but never contacts Brooke and Julian?? She should be at the wedding too!
Chris: Do we even need a reason?
Lindsey: This one is weird, I'll admit. But I actually liked her and sort of hated Lucas for the back and forth crap he gave her. I'd like to see what happened to her.
Vivian: I know, she was never on the show, but she seriously should have been! If she couldn't show up for her mom's death, maybe she can drop by now that her sister has been shot?