perverts? havent you heard? granger is NOT for fuck.
we dont have negative consequences because no two people agree on what "trolling" is. a good number of people are too sensitive, and take anything not brimming with sparkles, sunshine, and light to be trolling.
bleeding.... you bleed me, i bleed you back. no hard feelings. wont even bleed back unless it's bleeding out of combat, or clearly not accidental. yes, i will be a bigger class, or just as big as you when i bleed back. should have thought of that when you decided to bleed. bleeding structures.... thats a TK first time. second time, it's votekick. so far, nothing an admin needs to get involved with.
depending on how many players are in the game, you dont even have to take newbies to a private server. i've demonstrated the basics of building the few bases i know how to build to newbies on us1 with little to no problem. most folks playing have played an FPS before, perhaps even a q3 based FPS, so a little pointer here and there is all they need ("always aim for the head!" for example)
the "death of trem" is quite easy to explain. it's a niche interest mod to an old game. it is not a CoD or CS clone. i've been an active community member for many such games, and few other community members seem to come to grips with this, they always want to blame the death of their favorite game on whatever mechanic displeases them the most.
personally, i think trem will be actively around at least another 5 years. i mean, we still can fill at least one server to capacity every day. when we cannot do that for more than a month, then i might be willing to accept the fact that "trem is dying".