As said previously, we've been focusing on the Payload the most because it was the first server we created. Rotation server was created to attract a different crowd than the 24/7 payload. We know what works with Payload, but we don't yet know what works for Rotation. We're experimenting a bit with map rotation and such. As Dave said, lately, we've been busy on other projects.
If you guys want to see the Rotation server full again, I'm afraid the only solution is to log in even though it's empty and try to wait until more players show up. That's seeding.
But that's only a temporary solution, because seeding is not fun and kinda feels like wasting time. I really want the Rotation server to be as popular as the Payload. Map rotation is probably the most important. Player count might play a role too. A 32 player dustbowl might not be appealing for some players. Etc...
I still need a couple of days to finish this project, then I'll try to figure this out with Dave and the other admins. In the meantime, I'll try to seed a bit more.