As you may have noticed, some alliances are growing so big its almost impossible to hold all of them in one alliance of 50, requiring multiple alliances. So I suggest that we use a resource bank (Taken from another post) for means of upgrading the alliance member limits,ranking within the guild and other things like a possible GUILD MAP. Which everyone can generate resources FOR, but not FROM, to defend the alliance hall, but it won't be live, it will possibly be controlled by the leader or high ranks, and to defend from other alliances who are attempting to raid for resources fuel, etc. Which can be one huge effort for the guild to contribute their resources and etc.
Tl;DR
More Alliance Member Spots, Ranks
One huge *** map which can hold our resources and needs to be defended by expending resources on barricades and etc. Which will be overpriced like a mofo. But rewards are worth it.