At certain milestones, members could automatically be given certain roles.
Example 1: after getting 100 of comments on your custom level thread topics, you could get the role Level Creator, and after 300, you could get Prominent Level Creator
Example 2: after creating 5 bug report threads you could get the role Bug Tester, and after 15 could get the role Supreme Bug Tester
Example 3: after posting 50 comments on other peoples' custom level topics, you could get the role Custom Level Player, and after 150, you could get the role Custom Level Addict
it could add more variety to the server side bar without as many of the issues that came with the flat ranks system, since that was purely quantitative and promoted spam and competition, whereas this is a bit more qualitative and would promote more server interaction. It's not a perfect system and I have no clue how it would be implemented