I said this when I started season 4, and I think it answers to your point. So far the best example of this is Buffy (The Series) is almost treating Cordelia like she didn't exist in the first 3 seasons. Granted I think she was mentioned once so far, but here is this character who was part of the gang from Season 2 onwards, actually contributed, and it feels like the series has already forgotten about her. That's why I saw the Angel premiere after I saw the Season 4 premiere. It felt really weird that Angel seemed to have a better transition from the events of Season 3 than Buffy did, even though on Buffy it was all about starting College. When I saw the second episode of the respective seasons, I actually started to question why I was doing the whole switching thing because neither episode was related to another. Then when I saw the third episode of Angel and they pretty much recapped what happened on the Buffy episode, I'm like, do I really need to do this whole switching thing. It feels like the shows do a good job getting people up to speed. Basically, the only thing I wish was different regarding both shows to open up this current season was handle Cordelia's transition better.