That depends on what you have in mind to take place into your map... for instance, if you want to have a very good DM expirience, then you shuold the heavy fire power restricted so all the players would be combating for a long time before getting fraged (at least I think so) the more time you stay alive the more fun, dontcha think?. If it is a SP map, have in mind the pawns in the level (don't expect to kill a Titan with an Atomag, a Stinger maybe, but not an Automag...), get the idea?