Just throwing in something random, but what if the forums had a prestige mode like in Call of Duty. Once you obtain every award (except every group award) you have the option of prestiging and getting some sort of special hard to get thing. Maybe a seperate award for this or some sort of color or badge. It would reset all awards (excluding legend and group awards). The user would then have to earn their way back up and possibly having the option to do it again. I find it that this might be an initiative to stay active once you've done almost everything. Works for Cod, should work here too.