Reputation Change

I'd say just allow people to report it, and assign somebody fair enough to be a Reputation manager and moderator, something. And if THEY feel it IS unjust, they can use their own good judgement and/or pass it along to the other staff.

That sounds a bit too complicated. Just make it where staff handle any reports about rep, but cannot alter anything that is in relation to them(that they either gave or recieved, basically.)

Would be just like approving new members. We weed out the pointless ones.