I am just coming with a small suggestion right here.
I would suggest having any form of explicit images on the forums to be bannable.
As an example, there is Nitsel_'s signature. It contains s picture of Dwayne Johnson and a fleshlight. And though Dwayne "The Rock" Johnson might look sexually attractive to you, it's the fleshligt there should be a focus on.
And as you might have noticed, I mentioned for this only to apply to the forums. I do not care for your steam avatars, as those are too small to barely even see what's in them on the scoreboard, and you're all kinda creepy, so no one is gonna go on your profile, anyway.
Anyway, jokes aside, explicit images like the example I mentioned, are simply bad. Especially if you're part of the staff, and if someone goes on the forums, they'll see that, and immediately think something is horribly wrong with the server, that the people have some sick sort of humor, or that the entire thing is just a joke. On the forums, you represent the server, and with the loss of explicit images, it will look at least a little bit professional.