I'm afraid I agree with Gail on the costume. The Diana Trevor thing was a nice story, but way too awkward and contrived for the explanation for Wondy's costume. It honestly wouldn't have been too bad in my mind if she wasn't Steve Trevor's mom, but that element really took things a little too far for me.
That said, I'm not sure about this "the Amazons inspired the American flag" thing...
But most of all I want to throw in that I completely agree that we've been bad in transitioning from one writer to the next for a long time. Everyone seems to want to change the setting, change the cast, etc.
Gail sticking with the DEO is probably our smoothest transition... which really rubs salt in the wound, since the DEO and Diana Prince are the worst things to ever happen to Diana, post-Crisis.