Well I agree RC is a great tool, it works better in with a treated room , which requires a lot less correction. All rooms need a certain amount of absorptive and diffuse objects . Radical cuts and boosts by the RC can be harmful and cause their own problems.
I agree 100%. Audyssey in my room when I just had basic acoustical treatments just on the front wall was good, when I put treatments on my side walls and rear walls, it was a lot better. Now with Anthem ARC it is utterly amazing.
The less that the room correction software has to do to "correct" your room, the better it will sound, and not just at the MLP, but across more/all seats.