I'd prefer to keep it separate. You can do a search on topics, so it's not difficult to look for threads calling out bad behavior, either in constructive or in the Hog Pit.
This is reinforced by my personal experiences of my own game threads being trolled with false accusations and just constant bitching about systems (sometimes for pages) that we'd implemented by people who did not even play the game, attempts to derail conversations, and so on, and it was all allowed to stand. People's own shittiness is why this rule got implemented, and while I don't run or staff anywhere now, I don't feel like seeing it come back.