I would be wary of throwing any video game movie into the mix before it gets made. A lot of people made that mistake with Warcraft. Look how that turned out (domestically at least).
Similar to my point above. The new show is untested. There is some early hype, but it could be a flop. If they do anything Oz related, it'll be based mainly on the books with them using the property as a cross promotional opportunity for Wicked and possibly the show, if it does indeed do well.
We are probably getting Oz but not the Wizard of Oz Oz but more GoT Westeros version of OZ. As there is now another Oz project in development from NBC Universal outside Wicked and Emerald City show.
With GMR rumored to leave Disney maybe they can get the rights to the 1939 movie.
What most people know.
Personally, when it comes to Oz in my opinion; that, is a subject that may need to be left out of the parks to handle. Yes, it has a lot in common with LOTR and arguably GOT when it comes to that there are some very interesting ride possibilities with the IP. But much like GOT, LOTR, and especially for Oz; its a very problematic road in my opinion. There would be some certain things that would be called out in a negative light, and that there would be some things that would make it VERY hard to pull off.
Although, LOTR does have some more rather good opportunities in it's future, if WB can win that court case that has been said in the past; I can see them going instantly to Universal first, due to the roaring success in The Wizarding World of Harry Potter.
And for GoT; it's a very problematic subject due to that it'd be a potentially controversial move due to the having to cut down certain aspects that the show has been made famous for (the profanity, the visceral {not just in sexual manners, but the blood/gore/E.T.C.}, and the story being very hard to put into play).
Something
@quinnmac000 mentioned was with Fallout. While it would work better than TES mind you, it's very..limited in a sense. Yes, there are various points in the timeline that you can pull and do into an area that wouldn't be too much for the children, but it lies within a possibly borderline situation to where they may need to be drastic changes to make it fit in, and I have enjoyed the series for what it is; and see the potential in there. Although that'd be something that could be discussed much more than I would anticipate.
And then Oz. It's too timeless. In my humble opinion, I can not see anyone touching that, MORE THAN LOTR MIND YOU, because of it being so hard to make it right. This is something I want to speak on; in my most honest opinion, that; is the biggest thing. If you tamper on what the original film that revolutionized cinemas in a way that was never done before, I have to implore people in that it's an IP that shouldn't be touched. Disney tried to do that IP TWICE and failed in cinemas, as USJ tried that too with a version of Wicked and a full mini-land; but it wasn't a success. And you can say for Japan in that case, it just doesn't make sense to have that type of IP over there.
I want to be proven wrong about that; but I can't see financial, nor critical gain that they could achieve when it comes to Oz in my opinion for a full on theme park land. It's my honest opinion, as I'll leave it on that.