It depends on what you mean by "more damage than good" or whatever. It's an Xbox 360 Slim. I've already put an 80mm Antec TriCool in there, but I feel I can improve it a bit more. I was thinking of putting a 50 or 60mm fan (whichever fits) along the left side of the case (probably for exhaust). I noticed it's ridiculously hot on that side. Sure, do you all think it really needs it? I don't care. I just like modding/having a project/doing something fun (you may think this belongs on an Xbox forum, but I'm pretty sure my question is universal). I've already stripped and wired the connection for the first fan (so idiotically I threw away the original connection for the TriCool). I'm perfectly fine with cutting the connection for this second fan.