My custom NEMA cabinet only has 4 switches right now:
1. Master (breaks HOT between wall and the rest of the cabinet)
2. Controller (breaks HOT to the controller from the Master switch)
3. Signals (110v HOT to the load switches for the signal heads)
4. Cabinet light
I originally had one of the switches slated to go to flash, but I don't have any of the parts necessary to do flash yet, so all of the flash stuff is in the future. My controller has soft flash, so it flashes everything that way for now.
There is a NEMA flasher that is similar to the load switch you can get, and that's next on my list. Manual/Auto control switch is also on the list.
I don't have a mercury contactor or anything either, right now it's just plain jane simple. Not even a relay to be seen.