Sorry to bump old thread, BUT in the event this was never done...
I'm not sure how large your forum is but if you'd like to test out what I have. I have made something for page nodes. So far it grabs most likes, post count, bd bank $, message count.
Working on the post ratings feature, most profile visits, most replies, most threads, and so forth.
Right now the only way to disable certain ones is just commenting out the lines of code. Going to make each one available as a block for xenportal and/or the widget framework.
No charge, but donations are always welcome. Found some tutorials here that helped me make it. My only issue is I do believe larger forums will need to set up a cron job and cache the information. SO I have to write how-to on that... but seeing as I can't really test that out... my how-to is more like a I-hope-so