My only problem with the Aether Current system is this:

"Aether current 200 yalms to the north"
*Head north*
"Aether current 80 yalms to the north"
*Head north, hit cliff*
"Aether current 20 yalms to the north"
*Walks 10,000 miles along cliff edge before I can get up the cliff*

/rage

But other than that I don't mind being taken on a foot stroll throughout the zone first before being able to unlock flight - I think that's a great design decision. I just wish they didn't make some of the currents so frustrating to get to.