Nope. Mine was improved.
While there obviously are folks who prefer not to use it, I think its important to reiterate proper calibration/mic technique.
Also, interestingly, there are many, many folks who say doing all 8 positions makes for a huge difference from doing anything less. In fact, even if you had one single seated position, people would advise in doing 8 positions in a manner similar to this:
-position, front of position, position, behind position, position, left of position, position, right of position.
A couple of consumer-created Audyssey guides for reference:
From the 705 FAQ:
http://www.avsforum.com/avs-vb/showpost.php?p=12162481&postcount=2
A mini-how to created by an 805 owner:
http://www.avsforum.com/avs-vb/showthread.php?p=14605816#post14605816