I agree save for one thing:
Selling Adventure Zones. I don't believe it would be an issue, after a certain "base threshold" has been met. I think after Adventure Zone 3, they'll have been fair with giving away free PvE content. After that, either charge for expansions (New whole Adventure Zones) or charge for different side-experiences (An especially long dungeon with unique rewards).
I'm more than happy to give my money for actual single-player content; I am not willing to give it away for small things I'll forget about in no time.
Let them live up all that, then we can talk about it.