Agree. I think this is a big reason why Utahby5 stalled. For a new site there simply isn’t enough volume to make it worth clicking on every category. The activity stream on the right will functionally be a “hot” or “controversial” list and will become dominated by political/religious stuff. I would suggest keeping it simple with few categories:
1) Sports: all of them.
2) Religion/Politics/BYU: the stuff that needs to be sequestered.
3) Miscellaneous
If we get over some threshold like three pages of posts in a day on any topic, then it deserves its own forum. Otherwise it’s better to limit the subdivision.