Currently there are seven achievable ranks. The system is simple and gameplay is much more inline with survival Minecraft in the beginning. You start without the ability to warp and are only given one home location.

/home

and

/spawn

are the only free warp commands in the game. As players progress, more home locations can be earned. Only Citizens and above have access to public warps (at a cost). Nobles are the only rank that can create their own warps.