I have an Idea to solve all reputation problems.
Why not revonate rep and remove it all together, and create....
''Expierance Points:''
You advance in expierance points from ''Posts/the arcade/visitor posts''
To enable a way of removing peoples expierance posts include ''Rule breaking/inactivity''
And for users who wish to also remove other members expierance points could have an rating on everyones post, so they rate peoples post, 2 or under removes 3 expierance points, 3 or above gains 2 expierance points.
then you can do rewards for monthly expierance pointers.