Honestly without knowing the impact rerolling threads was having on the server I can’t tell whether this suggestion is good or bad. It definitely seems that rerolling was contributing to site-wide performance issues but that impact was almost certainly less than the effect that INCIT was having.

If re-rolling is a bad thing and the 30 minute time period is intolerable to most players then perhaps a more frequent cycling on the totals might work such as a reroll ever 10 minutes.

Another option would be to auto-increment the thread count by 1 every 30 minutes until it hits maximum and the resets to minimum thread count so that every player would be aware of when a particular forum would be at maximum and minimum thread lengths.