I'm with the OP on this one, I did notice a worthwhile improvement changing to compressionless housing. It did not raise the performance to mtb hydro levels, but made them quite a bit better. I did use the cheaper Jagwire housing, and followed TRP's advice to run regular flexible housing under the tape with drop bars and then run the compressionless for the rest of the run. I'm running the TRP Spyre calipers which I like better than the bb7s which I ran for a few months. Incidentally, I've switched to a SRAM Centerline front rotor which I find quieter and smoother and prefer it to the Avid rotor.

On a tour a few weeks ago I was able to continue on another 300 miles to a bike shop, on a wheel with two broken spokes and a rim which was severely bent. I could feel the wiggle with every rotation of the wheel but at least I wasn't forced into an emergency repair. This real world anecdotal experience reinforces for me the advantage of running disc brakes over rim brakes in touring.