How about adding a Drone similar to the one of the guy by the garage, only a bit bigger. You could give it simple commands like, move to subject x and put divice x in to their butt or stuff like that. But the main Idea behind it was that this drone uses some kind of energy to restrain subjects, giving you the option to perform simple actions on them whereever you are. But mainly it gives the player the option to move subjects between different racks mid session. Or to have a way of forcing two subjects to interact with each other.
I am aware that this would be a pain in the ass to programm and everything. But I thought I might just drop that here in case a certain someone feels like giving it a try.
Customer support service by UserEcho