(Skipped last few pages) Rewarding gang leaders for something they should already be doing by following the game rules certainly isn't a good direction.
I'd rather see more hardcore punishments than rewarding.. (You know damn well people will just make a gang purely for rewards)
A review system is good to put in place

If not majorly tedious..
Should just make it an outright rule and leave it at that, if caught with a bad picture, 24 hour jail, deletion of gang and removed from being able to create/own a gang for two months. (After jail time! so 3 months..)
Though perhaps a screenshot or some sort of record of the picture in question would maybe needed as not to be abused by PR's for an easy jail on people or ruining a gang.