How would it benefit the server: It would help the server by informing players about what's happening with gangs and server sided updates, It would also advertise other announcements that are posted and not seen by everyone.
Potential Issues/Exploits: None that i can see off the top of my head as it would help the community in every way.
Additional notes: the threads would be weekly and let everyone know about what has happened within that week. they would tell people who the owners of gangers are and new members and so on. This would also be a great way to get a few new forum staff.