Cool - no threats. You said that "you read somewhere" - I just refreshed your memory as to where you read it.
I have absolutely no experience with ypao (or the like) as I am a 2.1ch guy. So I can neither condemn or endorse such features.
In the future, I am looking to upgrade to a 6.1 system and for movies, it may prove usefull. Actually, it would be fun to play around with the settings and see (hear) how things change.
For music though, I am a firm beleiver of "true direct". Bypass as much switching, tone controls, and gagetry as possible.
Epic 80/600 + M3's + Custom Finish Algonquin V3's