Gungames and deathmatch will definitely improve your aim. In a normal CSS game the majority of the time spent in a round is for getting to where the enemy is and then watching other people after you die; so you spend 10 seconds shooting for every 2 minutes of game time. One problem is that those...
Opening for Serial Experiments Lain
http://www.youtube.com/watch?v=_XfJwh2cC6o
Opening for Futakoi Alternative
http://www.youtube.com/watch?v=M6GNLXqh53Y&feature=related
I would definitely recommend getting this. Its like Fallout 3, only much better. Also, you should check out the Stalker Complete 2009 mod(link)... updates the graphics, AI and just about everything else.
I'd just like to add that the current highschool map totally owns so maybe it would be best to leave it as it is. Though is the night version of it available somewhere so I could take a look at it?
I use a Razer Lachesis, 4000 dpi with a 2.0 ingame setting. I used to use a fabric mouse pad but the problem is that on really high dpi settings clicking the mouse will compress the pad a bit and move your point of aim so I now use a hard mat.
This happens to me occasionally but I believe it occurs when the map restarts at the end of a game. I'll try to grab the console output the next time it happens.
What we have now is pretty much equivalent to having 16k every round but with people spamming !bank at the start of each round. Would switching to 16k remove the glitch that allows people to use their bank on the pistol round?