One idea I used to say on Reddit about karma is, instead of it being an upvote/downvote system, I would suggest a system like Newgrounds has where it’s all specific moods, so people can distinguish between downvoting someone for malice versus downvoting someone for disagreement, etc. As for the mods, I think they can be good but there should be a system of ensuring if mods are being double-standard-ish or not.