Gunslinger may be reffered to 1-hand master, right? i mean, handling of 1handed smgs (uzi and alike), sawn-offs (dual-wielding lever-action fun in postal was epic), maybe scoped revolver. And the ability to mix them, for ex uzi/sawn-off shottie in a left hand, scoped revolver in the right, LMB to shoot with a left hand, RMB for right, mousewheel to aim with righth, alt to aim with lefth (or make it impossible to aim with lefth as offhand). In the end we get extremely versitile, fast to react, ready for anything soldier who can be usefull everywhere. While lacking effectivenes of more specialised classes. Some kind of middleground between all present classes. Maybe even give him an ability to dual a pistol along with a knife/small melee weapon/utility thingy. Maybe give him bonuses for dualing smgs/shotties speedfire for some extreme close range effect (this game does lack the spray-and-pray mentality, commandos will be pissed). And i do think that making gunslinger into mobile glassrapidmultycannon of sorts is viable.