I'm just wondering what you have against off-topic or information which isn't strictly about the build? Isn't this about community too?
People frequent forums for many reasons and this place can be a great resource, but can't it also be a place to get to know each other and to offer or receive advice? It certainly makes sense to keep the resource forums dedicated to that, but even very serious builders sometimes relax and have a beverage and shoot the breeze with each other.
We're all adults here and can act as adults. It is very easy to just not enter an off-topic forum if you don't want trivia or discussion: Isn't it?
Just a thought.