For a few dollars more, check out the Airfly Pro. Having a small, pocket sized device that can be either a Bluetooth transmitter or receiver at the flick of a switch, has saved my bacon several times. I've used it live to get sources into my console at FoH, traveling in the car, and for presentations when my laptop sound card was acting up.

https://www.twelvesouth.com/products/airfly

I'm curious if you've found any SPL weightings that make everyone happy?

Line arrays are used quite regularly in halls designed (at least in part) for unamplified performances as they are very rider friendly and we can gain the benefits of an array. They can be a bit of a mixed blessing. The difficulty has been the extremely wide horizontal which up until recently was almost all line arrays. Too much sound was sprayed onto the side walls with a wide horizonal line array creating unwanted reflections and energy build up. In addition, the rear wall of the audience chamber and any large balcony faces create harsh reflections that are unwanted and send energy directly back to the stage (but late in time). With newer DSP software that allows for avoidance zones in coverage and tighter horizontal pattern control, the sound can be tailored well. Some halls still benefit from point source coverage, it depends on the shape of the audience chamber, depth, materials, etc.