I personally don't care if people want pink equipment, that's very minor in my opinion (although very gamey). I don't even think I would enjoy the game if I had pink weapons in the battlefield. And anyone who saw me playing would call me a cheater as soon as they saw my computer monitor ("haha, are you cheating?"). Changing it so you have no fog, using transparent walls, having hay stacks and bushes that lay flat on the ground, those are a lot more serious to me.
I think the whole thing can be easily fixed by having an official guide to what textures people can alter (and still be allowed to connect to the server with) and those they cannot (and will be punished for editing). If you want your texture modification to be approved, you submit it and it gets looked at. Seems pretty common sense to me.