Finagled Realms SMP
The way the server works is you have a set of builder ranks, 13 of them going from
Laborer to Construction Operator
That are received from completing the task the rank requires. Each rank comes with a new kit, and some new commands.
The best part about it is at the second rank you receive the /fly command.
This allows for players to build much greater things, or for the creepers out there it makes it easier to creep. ;)
The server is running several plugins, few are below
Commandbook (instead of Essentials)
However even though it is focused on building the server is all survival, on normal difficulty, so do expect a walk in the park.