No, I understand you perfectly, but the type of segregation you're interested in will not in any way make more people interested in discussion a particular series of that season. This is a small community with quite the limited discussion, a new thread created in General Anime will stay in the first page for quite some time. So I don't think that the lack of series discussion in a particular series is out of some viewer being unaware that a particular series is new.

I just don't see what would make a "Current Season" sub-forum make anyone want to try a series that would have otherwise be mentioned in General Anime.