Dont forget the gcb, which is helpful winning close battles.
Many ideas on gang points usages and upgrades have been posted here and previously. I know zen reads them all and is working towards giving us some exciting changes to come. Making gang points worth earning and defending is definitely a must. We have given zen some ideas over the past few weeks about how to improve the whole gang war/points/system.
ie...gang gym-temp training bost, gang happiness, special gang district, special stores to spend gang points on gang only items, and others tied to a dual war system
I look forward to seeing how this whole system evolves, there is alot of potential to make this game even better and more addicting.