My idea starts with a piece of equipment, a personal cloaking device, probably fitted to the leg slot of a robot.  This piece of equipment has a high cpu and reactor usage and a high accumulator cost, but the pay back is that you are rendered invisible to all enemy players and npcs.

The idea continues with a stealth assassin bot who gets a bonus when using this piece of equipment, probably an assault bot, who can surprise and assassinate enemy bots. 

Another smaller bot that can also use this bonus and be used in a scouting role would also be a possibility.

Of course a nexus module and / or deployable item should also be included, for larger scale cloaking fields,  for ambushes and what not.

And then a counter deployable item that reveals invisible units would also be a possibility.  Let me know what you guys think!