I am aware of a few useful console commands, like the one to display FPS (although I have forgotten it >.<)
There was also a command to increase the number of sound channels (to 128 I believe, although I forgot that one too), and this would help with the sound going out.
Id also be interested in commands that would give a person max c-bills (on a private LAN server of course) so that we can practice on our own. The command to spawn some unmanned Atlas for target practice would be useful too.
And for those who don't know, you open the console with the `/~ key.
So, list your useful console commands here!