+1 for Mythic adventure!
What I would like to see in a "mythic" adventure path would be a series of hooks at the start for each of the previous paths perhaps with a corresponding campaign trait as we have played through four of them and the players in my group would like to be able to dig out their old characters but not necessarily from the same campaign.
Also how about test of starstone IN the AP followed by divine kingmaker and final battle between good and evil to cap off the path. Now that is an "epic" adventure