so, you use XLR style cables as the "first" patch cable in your control room? (say from your booth to your mixer). and....
How do you get from the mic feed line, say to an outboard pre? ...or do you have that kind of stuff with XLR connectors in an easy access too? ..or XLR to TRS cables?
I've seen some places where they just have a "fan"(like the end of a snake) with their XLR connectors in the control room, or the mic feeds are hardwired to some destination (not much flexibility there)..like a specific channel in their mixer.
it sounds like all your "mic level" lines use XLR, and once it is boosted to a line level, you have a TRS style patchbay too??