As someone who does do "test builds" on creative (as well as some non-tests) i could understand the want of not having floating grass squares with half built stuff all over it. In my personal opinion, theres a reason i build on C not on SP or a test server. While I'm on C, i can get opinions, use plugins, get help etc. Also, i don't want to just leave C empty by going to build on a SP world or planning...Its nice to talk to friends and build at the same time, what ever the project may be. When I'm building a project for the nerd servers, it seems fitting that i would do it, on a nerd server, because the resource is there, why not exploit it. Another aspect is while I'm on C building or playing with redstone for S and P related things, its just another player on C that shows people wanting to come in for the first time, hey, people actually play on this server and there are people around. Wether I'm there for a long period or not its still someone contributing to chat or just hanging out building. Now personally, i am against multiword servers for different builds. On C in particular, your just dividing a cake that has already been eaten. The last few revs the map is getting more and more bare, unfortunately.