I thought Abby left because the actress wanted to spend time with her boyfriend at the time? I also feel that scheduling issues happened with a lot of them as well. Henry was probably going to be a bigger story for Jen if he had not left and never came back (the actor). I heard Michael Pitt did not enjoy his time on DC.

I have to admit the make out between Pacey and Alex was good stuff in season 5. That was serious chemistry. I would not have disliked her to come back instead of the Pacey/Audrey stuff we got in season 5/6.

I did not care too much for Andie, even in season 2. I thought her story was rushed with Pacey, and I was not sad to see her go. IMO her chemistry with Pacey was average at best.