I had another idea for a Tool Slot though. a Wrist Dart Launcher. would have similar velocity to the Crossbow, and could be outfitted with multiple types of Darts, Poison (raw HP damage through shields), Explosive (similar to the Crossbow from CoD BO:2 would one shot any infantry stuck with it, unless Maxed Flak Armor, making Flak Armor more attractive) Smoke (smaller coverage than Grenades) EMP (targeted EMP grenades, puts Shields and anything that EMP's hurt at 50% instead of 0%) the darts would regenerate over say a 30s time period, and have a cap of 5 darts. You can have 1 Dart Type out, but could hold E on an Ammo Pack to switch dart types at your leisure, and Engi's would get a small extra bonus EXP wise for LA's who use this feature. You would not have to unlock each dart type, you would start with the Wrist Dart Launcher, each level would increase the Ammo Capacity, and Velocity of the darts, along with a slight damage boost on any damaging darts. This would be an interesting and more easy to balance concept than Wallhacking in a can, or Counter Motion Spotters.