I think the crouch/run/bhop issue needs clarification. It is clear watching some people’s player-models that they haev some sort of hack. Often it isn’t quite “running”, but it does speed up movement and I’ve had people argue about it. It IS a grey area. I personally dislike it.
Maybe the rule against crouch running should be worded “No movement-hacks of any kind are allowed.”
This would make it crystal clear that anything other than a standard crouch, walk, or run is illegal.