Being realistic,
Over the past year, Universal has increased their content acquisitions for film/television in the UK, China, and Japan as well as increasing their animation based jobs with the goal of creating original IPs/content in the US, China, and Japan. Dreamwork even started a new program to increase their ability to create more original IPs.
DreamWorks Animation Launches Shorts Program With ‘Bird Karma’ – Variety
UC creates, designs, and develops all theme park and resorts attractions and aspects for all Universal parks now (per their own statement). NBCU despite reports of planning to sell Oriental Dreamworks seem to still own their 45% share and haven't sold it off. In addition, based on the location of the animation based jobs in China which were in Shanghai and not Beijing it seems they may have continued supporting that effort. This my suggest that Universal is still strongly behind with Universal Beijing being authentically Chinese using Oriental Dreamworks based products and IPs. With UC creating those attractions, it is likely based on Potter, Hello Kitty, and Waterworld , that these attractions may be cloned and placed stateside with slight changes.
Universal's upcoming film lineup until 2021 is very strong on the horror/suspense/thriller with 12 releases and family films with 11 (8 animated, 3 live action). Out of action blockbusters,there are only 5 releases (JW, Skyscraper, Pacific Rim, Cowboy Ninja Viking, Mortal Engines) currently not represented in the parks. The rest of the films are no gos for any theme parks (No Fifty Shades of Gray attraction in the 4th park). This suggests that many of the IPs for the upcoming park will be older, animation based, or from outside partners. It can also be suggested based on the film line up, Universal is strongly pushing for more family attractions/IPs which matches what other people have said.
On the television side, Universal is creating their own comicbook shows using the graphic novels Umbrella Academy and Deadly Class with both being picked up by Netflix and Deadly Class airing on Syfy as well. In addition, 88% of Universal Cable productions upcoming projects are sci-fi based/horror based which suggests potential for park use.The department with the biggest increase is Dreamworks Animation Television. DWA television is expanding and producing at a rapid speed, creating more and more shows and recently partnered with Dentsu (japanese marketing company) to jointly create/develop a show based off Brickbear toys. Nothing on the NBC television side seems to be for/capitalized for theme park usage.
UC's positive working relationships with WB and many Japanese based organizations to include Dentsu, Nintendo, Square Enix, Shonen Jump, Capcom, and Sanrio make it safe to assume we would observe more partnerships/utilization of their IPs in upcoming parks.
However, a job opened up whose job is to monetize and find value of underutilized and nonfranchise IPs in the NBCU catalog across the entire company which last time I checked includes theme park so potentially we may see some obscure IP show up in future park/parks.
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In other words, the sky is the limit for this upcoming park and there may be quite a few surprises in terms of what is utilized than previous speculated. Kinda like T2 becoming Bourne out of all IPs.