My issue with the Mosasaurus tank was always that you were flat, then somehow under water, then flat again. And it's enough water that the mosasaurus goes
over you. Yes, I understand the "we're in a theme park" argument which will descend into "are exit signs in Forbidden Journey themed?" argument. So let's just set that aside.
Piggybacking on the "Mosasaurus near bridge of HP" idea:
Based on where the "Extended queue" section is, and it being right by the lake, why not simply convert the mosasaurus screen into the queue of the raptor coaster on the lake-border? The walking path "slopes down" into a tunnel where we can view the mosasaurus (just like in the film) as we continue the queue. Doesn't have to be amazing. Just the Mosasaurus swimming around and every now and then whack the glass to spring a leak (or have a variety of scenes that break the glass).
I would prefer that they incorporate aspects of JW into multiple elements of the land. Our land is
HUGE in comparison to USH's. We aren't limited by space, so let's use it.