Hey there! Welcome, Darthi!
In my experience, I tend not to put expensive systems on my stealth suits, not if those systems are force multipliers (ATS, Target-lock), given their poor fire output and their already expensive price. Drone controller is perfect, given the Stealth suits' durability, and the more tactical role they have to have in my opinion.
Lately, though, if I have 2-4 points to spare in my list, I give my Fusion Blaster Shas'vre a Multitracker or a Velocity traker, just as a random upgrade that can come in handy in some games. But again, this is only if I don't have another clear place to spend those points; otherwise they just go naked with homing beacon and Drone controller.