Disney media is currently rehashing a lot of old media... but most of it doesn't have a large presence in the park. Aladdin has a spinner and meet and greet, Incredibles have a dance party, Ralph is non-existant, ect. On top of that there is an extreme back log of popular IP that could use a larger park presence such as Jungle book, Hercules, Tarzan, Mulan, Pocahontas, Stitch, Tangled, Moana, and many many more even if it isn't "current" IP. Finally Disney does have original movies still coming out such as Onward and Soul next year. Basically if they choose every ride to have a popular IP (and I get that strategy), they can do it without needing to get repetitive for a long long time.My long winded point being, if media drives park content, and the media relies increasingly on telling "familiar" stories of known characters, what stories then does the park tell, other than stories driven by characters, stories, worlds, etc., that the public already know and love? Is there room for original, unique storytelling in the parks, that are not tied to existing media content?
Going back to Mary Poppins, the idea of this attraction kind of baffles me because
1)It is not a "hot" IP to get people to visit WDW/Epcot (box office numbers show that)
2)It is not going to be something unique you just have to go back to ride again (like Tot or Everest) based on the rumors
So why are they building it?
If they wanted to add a cheap C-ticket on that side of world showcase with an IP, put Big Hero 6 in Japan or move Aladdin into Morocco [I know neither of them fit perfectly, but they fit about as well as Frozen]
On a side note while my fiance was most excited for all the IP rides... her favorite rides ended up being Tower of Terror and Expedition Everest. Popular IP might get more people into the park, but I hope it continues to develop original, unique, and fitting E-tickets into the park to keep people coming back.