I think for me with Vala I just accepted it and rolled with it because I didn't have as much emotionally invested in her as I did with Jack. She at least I thought brought a little life into the show when most of the cast seemed to be just wandering through their scenes for the last two seasons.

A few years ago a thread on GW was started for talking about Jack. I participated once only to find people only wanted to talk about his humor. That's part of what led to this entry in the first place.