> There's also just the desire to play broken builds and abuse whatever it is that makes them broken.

This doesn't seem like a negative thing to me. Evaluating the mechanics of various builds and trying to identify effective strategies is a big part of what makes CF fun. If a build is truly "broken" then that's on us as staff and not on the players who (correctly) recognize its effectiveness.

Edited to add: the above doesn't include abusing bugs and obvious game design oversights. If it turned out that overhead with a particular axe automatically killed the target, and you ran around slaying people, that would be "bug abuse" and not "identifying an effective strategy".