Something is going to have to happen in the next 5 years. Clearly Disney wants to invest in their IPs and Universal hasn't put up an original major Marvel ride in the Marvel area since Marvel Super Hero Island opened in 1999. They have a 1999 Dark Ride, a 1999 Roller Coaster (refurb in 2016), and two off the shelf rides from 1999 and 2000.
The contract specifically states that the Marvel Universe will be operated and maintained in a "First Class manner."
https://www.sec.gov/Archives/edgar/data/1262449/000119312510008732/dex1057.htm
After Pandora in 2017, Toy Story Land in 2018, Star Wars Galaxy Edge in 2019, Tron at Magic Kingdom in 2021 and Guardians at Epcot in 2021, Disney will have one hell of an argument that Universal has been neglecting Disney's IP. They will say these are first class theme park attractions at Disney World and a bunch of old rides from decades ago are not first class. I also can't recall the last time I saw a Marvel Super Hero Island advertisement on the back of a Marvel comic book, something that they have to do for the term of the contract. Hopefully they can come to an agreement and avoid arbitration. Universal seems more interested in Harry Potter anyway, so it doesn't seem (to me anyway) that losing Marvel would be a huge deal to them. If anything, they just seem more interested in keeping it away from Disney.
Either Disney will get Marvel by way of payment or in arbitration or Universal is going to have to spend $400-500+ million to redo Marvel Super Hero Island to get it back up to First Class.
I'm all for more Marvel stuff in the parks, just not an entire Marvel park. I kinda want Wakanda at Hollywood Studios (new African restaurant + Rock n Rollercoaster re-theme + simulator), but that's probably just me.