Look, Disney has to place Marvel somewhere inside Disneyland Park, and this is the perfect opportunity.
Classics like Adventure thru Inner Space, Carousel of Tomorrow, People Mover and the Wizard of Bras can be removed, then any older, out of date attraction is on the chopping block. The Haunted Mansion has old, outdated effects...
The new Groot attraction can use virtual reality headsets, which would save a lot on Maintenance, and could speed up the queue.
And during the Holidays, they could bring back Haunted Mansion Holiday just by changing the digital loop on the headsets.
Plus just think of all the merchandising opportunities to buy limited edition AP stuff.