Once you have earned 100,000 fleet credits through contributions AND have achieved a game rank of Vice Admiral, you will be promoted to the fleet rank of Captain. Once this happens you have access to the fleet stores.
I was once in a fleet that didn't have such restrictions, and the fleet stores were constantly cleaned out. Anyone had access. If you were in the fleet you could buy from the fleet store. Once I donated 100,000 dilithium, but couldn't buy anything because people kept on cleaning out the fleet stores. After that I just gave up and stopped contributing.
Adding in additional ranks would be very nice, but really what i would like to see is some sort of 'Fleet Reputation' for things like operational assets and the like.
Lets face it. Spending the high amount of time and resources to get Engineering Provisions, Ship provisions, etc is worth it. You also get a fair amount. Our Fleet has well over 100 provisions in each category.
ON THE OTHER HAND, the stupid fleet support devices, operational assets, etc. cost wayyyyyyy to much for how few you get, and Buffs are even worse.
So as a Fleet Leader we can decide to queue up a T4 Provision Fleet Ships project that provides 12 ship provisions for 960 marks, 72K dil and some fluff OR spend the same amount for 5 buffs?
So spend it on something that will last as long as you want it to last, or spend it on a bloody one time use buff that isn't really needed if you have even a decent build/team?
So back on target - it would be nice to not even have Fleets dealing w/ buffs and the like, and move those to a personal reputation where the people using them actually have to fund them.