I don't plan on the spawns changing - but I'm also very concerned about the camping issue. I'm not happy with that area. I like the exits I have but agree there needs to be more higher up.
Well, I agree with the height, but that won't fix the issue. The issue is that you have a rectangle yard with a square spawn. It's very boring. Yes, you have 3 exits, but they all exit to the same area, and from certain points, it is possible to camp all 3 exits from a distance, on the same level as the exits. Tie that in with the height advantage, lack of good flanks in the building. it'll be really easy to camp spawns.
You asked about what spawns were peoples favorites, and I said why my favorite is good. Find out why the others are good, and use the design theory for spawns, in your map. (You want multiple exits, to multiple locations. They can be to the same yard, but they should not be right next to each other. And they should not all be within the same line of sight... thats the basic theory)