Steve, did you put a blank plate covering your second 4-gang box? Or did you hide the second box with just connections behind the wallboard?
You probably already know this, but all boxes with wire connections need access through the wall, which with a GE can lead to a less than ideal looking installation (unless you hide the second box somewhere).
In the last project I installed with a GE what I did was run all the wires from the GE box to the equipment closet / room where the subpanel was, and all lighting loads ran back to that room as well (as of course did the power which was in a subpanel about 3' away

. In this case I didn't use a in-wall 4gang box; instead I used a large metal surface-mount box with front access hatch. It goes on the plywood right next to the subpanel. I could have just as easily used a 4-gang in wall box. The key isn't the box type; it is the fact that these connections are centally located in the distribution room.
This yields two benefits:
- where the GE is installed there is only one box. So if you want to put your GE in your theater or lobby there is no eyesore of the second box.
- I can completely replace the lighting control system and cut out the GE and put in another system with minimal impact. All of the necessary wires run right into the existing box in the equipment room. I would just pull those running to the GE and install new runs running to the new device.
Yes, it does waste a good bit of copper, but copper is cheap. The flexibility of centralized wiring and distribution is really nice to have for upgrades down the road.
- Rhino