You may be operating under an illusion. When I started playing, shortly after standalone came out, admins would kick you for battle grangering. Maybe the real, pre-standalone old timers didn't have to deal with it, but it was certainly a problem when I started.
!warn then !denybuild seems reasonable. Vote kick if admins are lacking. !kick if they just will not give it up.
Personally, I'm pretty lenient with new builders,etc. Often they will try base ideas that old times wouldn't even consider trying. Usually those bases fail, but sometimes you'll see an idea in there that can be useful. Some ideas just need to die though. Constantly wanting a forward base, etc.
The care and feeding of new players is important for tremulous, it helps to create a better, more skilled playing environment. Letting new players in thinking they can outbuild everyone on day 2 is just silly. I try to use denybuild lightly, but when I do, well, its just for one map. Often I will let them build though. Funny, the battle grangers do much, much less actual building than you may realize. I've watched grangers hang around base for some time, building the occasional doorway egg or floor trapper, seemingly oblivious to what is happening, then get bored and run into battle. Lots of times battle grangers just want the spit so they don't have to get too close, which of course they will.
To me, feeding is altogether different. Everyone feeds at times, the good players realize it and change their strategy. New players don't and make the game more challenging for all of us

New builders really can sink a match though, even a couple matches if they continue being stubborn.
wow, thats pretty disjointed, sorry
