I hope this hasn't been asked, I checked the site and didn't find anything. I just was wondering if it was ever considered to create weekly /monthly /yearly leagues with reputation calculated only from questions opened in that week / month / year.
I know it's perfectly possible to get to the top even if you joined the site later (I was number 63 in July 2011 and I started contributing in May 2011), but I think it would be more "encouraging" for new users to be able to compete with others without older users having the "advantage" of reputation gained from old posts.