I think it only makes to 1) decide where to put the land and then 2) figure out what to put in there knowing how much land you now have to work with....
We should all know by now, with Disney, nothing is ever official until dirt moves and construction begins... And even then, I'm hesitant until something actually opens...
So, while it is great to hear they keep talking about Avatar still coming, and great we now know where it would go, until CMM is closed, demolished, and Avatar starts to rise, anything can and usually does happen...
I'm all for this Avatar project happening... But if it winds up cancelled, then so be it... Just don't expect anything else in its place keeping the staleness of WDW in full effect....