Secondary darts pistol with different nanite charged darts to choose to hack into the tech people carries... doing different effects. Dissable abilities... disable main weapon... activate grenades within 3 sec so they have to get ride of them... Though it would be nice if you could rotate the and choose which one you shoot using alternate fire button... Obviously one of them should just do damage over time. Blind would be a good effect too... A really good one would be a tracking gps signal emiting dart for vehicles... or even a dart that haks into air craft controls messing them up... or any vehicle for that matters doing random actions like shooting an unwanted fire that could be use to damage their own people and even start a friendly fire confrontation... while the infiltrator should get credit as assist kills of what trans curs... No smoke darts please... Maybe this could be an alternate to the spotters or detectors? (I think I am the only person that noticed that if you are invisible you already have an advantage to know where others are faster than them... so spotters and detectors always looked to me something engineer should have while we should have a much better way to get ride of them than a blue cost emp nerfed useless grenade.) In fact spotters contributes for people to know if there is an infiltrator to search for as if the terribly loud sound of the cloak wasn't enough.