I thought I'd never have/do anything improper enough to be able to post something here, but I guess I just did, and it's still nothing compared to what some of you are doing.
I was getting a bit bothered by how much dust the side door (both the optional internal one and exterior one) would gather so quickly, so I decided to take it off. It kept the inside cleaner, or at least the dust more centralized to the easier to get to places, but still. I don't think it's doing a whole lot for temperatures anyway, so it's added dust/noise. We'll see though, because my video card ran warm even with that. This is still a test in progress, I suppose.
While I was at it, I decided to get rid of the LED fans because they didn't match my stuff (they were Orange; stuff is Blue), and I just didn't want them anymore, so the ones that were on the side door replaced those four. I also took the optional grills off of them since they were likely adding some noise. These fans are quieter than the Xigmatek ones too, but also push less air. It's an open type case so I'm hoping that doesn't have a big impact. As a result, it's quieter and, so far/I hope, cools about as well. They are just the standard Cooler Master silent type, but wow are they quiet.
The thing is, I didn't have a way to get the the two front fans on. One had flanges (or whatever they are/called) that were long enough to need a grille in place to hold them firm, and the other was a shorter type that wouldn't even work with these fans. I had to resort to electrical tape.
Silly photo making the fans look idle when they were spinning when I took it.
Anyway, I taped each side in the center, and then additionally taped the two together in the center (bad idea or good idea or doesn't matter on that second part?). I was worried about how firm it'd hold them, but it does perfectly. There's some mesh pieces in front of them, and then the door, which is also mesh, so it's never seen. This might even make cleaning them easier and quicker, so I might just stick with it.