I'm not sure this exists yet, and I'm almost positive there's at least one version of it out there, but this mod might help out a lot with regulating forts and brick count in fortwars servers
Those of you who have hosted fortwars will agree with me in that it's hard to decide when a person leaves whether to delete their base or keep it, because on one hand the bases lag the server, but on the other hand the players might come back and use the fort some more.
What I've thought of is this; what if there was a mod that cleared a person's bricks if they left, but only if the person did not plant a certain number of bricks. This number would be set by the host somehow. If you have more bricks than the limit set by the host, your bricks stay when you leave. If not, kiss them goodbye.
Not only does this clean up servers, it promotes good fort building, because in almost every known circumstance better-built forts have more than a certain amount of bricks. The only way I can see this being bypassed is if the builder builds an extremely spammy fort with 1x1 walls and the such, in which the host could easily take matters into his own hands.
/discuss