I think there's a way to take a "best of both worlds" approach. I would hope so, anyway. Give River Adventure's first half a refresh with new/refurbished/additional AAs, transition into a Predator Cove area that actually, you know, has some predators that we can see (how about a Baryonyx peering out of the jungle paddock, for example?), in addition to establishing that the Indominus has escaped, and the culminate with the new finale from Hollywood.
I really don't want the aquarium conceit to transfer over, personally. Though I'm sure that's the element that is probably most likely to happen if JW comes to Islands. You're basically just left with 3 animatronic dinosaurs in the whole ride until the ascent, and I think there needs to be more.