Perhaps change it completely? Have it so gangs can pick one of their properties, be able to use a few kb of mapping and have a location separate from their base that would be attacked by cops instead of other gangs. This could also work the other way around, with squads able to defend a location of their choosing. Because with the current system, every gang rob results in reports of spawn killing, or using cars to block the safe etc, it's usually just a shit show which is why the majority of gangs have opted out of GRs. Plus cops would also see the rage happening in chat so would use it as an opportunity to just raid and arrest everyone, which takes away the whole point of GRs to begin with. Just saying, I think the current method of GR is a good idea on paper, but in all honesty is completely unfix-able in it's current state, imo.