I don't know why but for some reason I think both Stassi and Kristen will be back next season. Now that Kristen and Stassi are backing each other, it sets up the backdrop for next season, SUR vs formerly-SUR.
Vail was a non-entity. Once the storyline shifted back to Schwartz/Vegas girl and FI/Miami girl, she wasn't a factor anymore sans the time where she went through Kristen's phone. Wonder if she was even invited.
What about a chunky sweater?