This is a very interesting topic. I share the same problem as spettitt. I am currently working on a theatre project with hundreds of different size wall and floor
boxes. The design team uses IFC model to put everything together. Currently it kinda feels that Spotlight is more oriented on live shows than permanent installations where these boxes are the first step in design. Of course you know the location of some equipment (like dimmers) in the beginning but it all really starts with cabling and boxes. It would be fantastic to be able to link the 3d and ConnectCad + easily modify the boxes to match the size and amount/type of connectors in real life.