Mainly for the GunGame server, because thats what I play so I know what I think needs to be changed a bit :P
The text chat, always continually filled and you can never see what people are saying. So maybe change the colour of the actual chat, or find a way to move the game text (eg teamkills, levels etc) somewhere else.
Nades in warmup. As suggested by Squat, you get a random type of nade every time it re-appears, flash, smoke or HE.
possibly Skins. You have to re-apply them every time you join. Any way to make it remember, but have a command for it to bring the menu back?
Jailbreak Server. Is anybody every actually on it? every time I go on, 0 people on it. Possibly, if nobody does use it and I'm not wrong because of my position in the world, change the type of server? maybe a surf, or an aim_ map server? I have a STACK of aim maps from my last clan's server, which shut down with the clan. they are quite fun, and it always ended up as a friendly environment and had a lot of new people to the clan/forums.
More stuff. We should make a whole heap of new skins, maps, and models, for our servers. I've made a map and I'm still working on it. Skins are basic to make and look really cool. If anybody knows how to compile a weapon/player model, I have a few I've made somewhere we could add to it.
Quite a few ideas there... IDK why but I just put them out there.
PS: have to say this is a very good community