I think the six-axis is fucking awesome :P If used as an enhancer, and not the main feature, it's a fantastic set-up. The games that have utilized it well have been a real treat to experience. The controller wasn't meant to be fully motion based, and as long as games keep utilizing it when they feel it's appropriate (not just slap it on to say you have sixaxis control), I'm all for it ^_^
Sixaxis REALLY helped you feel like the wind with Flower, and guiding arrows in heavenly sword was just fantastic! And the uses for it in Ratchet and clank were totally badass! It really does increase the dept of these games in my opinion.
From 0 to KICKASS in .stupid seconds.