Poor post revisions could use an interface in the core. Yea it's a trivial configuration change, but I see why the mid-technical users get freaked out when revisions get numerous. This really gets noticeable on sites with decent amount of users.

For me the downturn in the economy means no new hardware for a while, so I won't be expanding my database servers. I'm limiting to 5 revisions for now to see how much data will expand. File sizes and time to backup databases will part of that benchmark test before I increase revisions.

BUT... Big coolness for having a revision trail. Digging in the code also reveals there might be some interesting uses and may also lead to a way to save and authorize editing changes. It's on my plugin wish list.