Well, for the same I miss /comp/. Even if it didn't have too much activity, it wasn't a bad board, for it was fast and concise in response, though not particularly active.
As for the character's boards, I said that they will be missed because they are, after all, some unique character's board, and even if we resent the lack of activity and it cannot be helped, it's a shame they will have to go to trash (not literally, since this change can be undone). Also, while I don't see why we should do this, I cannot say I can complain with actual arguments.
As for creating a new character board, well, I don't thing it would fix anything. If there's no activity now, there probably won't be any activity in this new board either.
Sure, having less boards in a not-so-active chan is good, but in my opinion this won't do any difference.
TL;DR I don't mind annexing the board even if it is kind of sad, though I don't see how this would fix anything.