When this deal is completely done Disney should take several IP from fox and move them over to the streaming service regardless of how much box office they think they will give up.
They should really consider world building using multiple series to tie together different realities to keep those worlds constantly flowing to the subscribers. How Netflix is working the Marvel tv shows is the perfect example.
They should also merge some realities together to create better more exciting worlds. For instance Disney has a ride called Big Thunder Mountain, Fox also had a movie based on a Zane Grey novel Thunder Mountain, and fox has a ton of old western movies and franchises like the Cisko Kid, now add in the Marvel western characters and they can create a fantastic western world reality with synergy everywhere.
Why not create a Pirate town and theme around it, and do the same using the big E tickets to tie together a reality that Disney can build off of, to add to the parks, and sell merchandise, and IP branding, eventually creating big tentpole movies or new lands to the parks expanding popular e ticket rides.
Up until the mid fifties Disney lacked live action movies, Fox did not. There were a lot of genre's that Disney failed to take part in even after they started to produce live action movies, however Fox was there producing.
Go back to that original show that Walt came up with to fund Disneyland and use his basic ideas to build the streaming service.
build universes around the lands and E-tickets.
Big Thunder Mountain - a western world featuring real and imaginary characters and stories from Marvel, Wonderful world of Disney, the parks, and Fox and Disney's movie and TV library
Jungle Tales - built around the Jungle cruise/ Adventureland features Marvel characters like Kazar and Sheena and tales of Africa, and the savage land or lost worlds
Pirates of Tortuga - a world built around the Pirates attraction featuring characters both real and imaginary
Haunted Mansion presents, Tales to Astonish, Tales of Suspense, Journey's into Mystery, and Strange Tales Four long running Marvel horror anthology titles turned into Twilight zone and Night gallery showcases that build a world of horror and intrigue.
The Vernwellian Verse of Tomorrow - Shows built around the characters of Verne, Wells and other great science fiction writers of their time
The Dimensional realities of Space Mountain - a modern Science fiction anthology that highlights worlds of tomorrow with a focus on alien worlds or parallel universes
The Storybook - features live and animated tales of fantasy some connected some stand alone
Marvels- a rotating spotlight featuring different Marvel heroes in 1 to 10 episode story arcs. Introduces characters like the Fantastic Four into the cinematic universe and hero team ups in shorter arcs.
Planet of the Apes - to big to be anything but its own world
Star Wars - Tales that occur in between the movies or even expand the tale
Then there are the thousands of TV shows and movies that could be remade revived or reimagined