This is a good idea. But i know it have been comented befour on an older thread. Besides im preatty sure i saw a moderator say they dident want to copy any ideas from other sites, but be original.
This has already been discussed before, and I doubt it will ever come into effect. That would make this site far too much like kongregate.com. That is their draw.
I am sure that in time Dan and co will make some equally smashing draw unique to this site.