Where I play there are no ambient mics feeding room or stage sound to people's in-ear mixes. Leaving one ear bud out isn't usually recommended as people tend to turn it up and risk hearing damage. I've thought about upgrading my in-ear monitors to the type that have ambient ports or mics built-in. Other than that I'd be looking and somehow adding my own small ambient mic to mix room sound with my in-ear mix. Since the pod has so many inputs and outputs, I was wondering if it could play a roll in this.
We have some small headphone distribution boxes on stage for each musician, which I presume have xlr input from the mixer to stage snake, along with some EQ controls and 1/4 inch jacks for headphone/IEM distribution.
I'm still trying to argue for room/ambient mics that would to go the mixer, and could be added to IEM mixes, but even if I win that argument, we wouldn't want to introduce delay which can happen with such mics and throw off your timing.