In general the article is fine, features and feats rank between somewhat underwhelming (like the +2 to ongoing stuff, why not resist?) and somewhat useful, except the PP's 16th level feature for windsoul.
At-will Windwalker is screaming for abuse. A genasi Wizard practically gains +1 attack +4/6 damage with Elemental Echo every round. Swiftwinds gives you at will movement free of opportunity attacks, every round. Manifest Healing gives you at will 15/20 THP every round you have a move action to spare if you have second manifestation (10/15 if you don't, which is still pretty good). A warden with that and Buffeting Winds would be c-r-a-z-y.
I'm all for more powerful options because I think a lot of dragon content lately has been in the somewhat underwhelming category, but while the PP isn't by itself a mega hit, this one feature is a bit over the top. Perhaps windwalking twice per encounter would be more reasonable (and still quite good).