I think they could make the Jaws ride so much better with just a few changes.
-- They NEED to camouflage the tracks/etc where the shark is going to emerge. The water isn't deep enough to hide what's underneath and you can literally see Bruce lying in wait before he emerges. They need to deepen the water, paint the bottom dark blue & build a tunnel to hide him in, etc.
-- A decent Orca boat would be nice. It doesn't need to be very accurate to outshine any of the ones they've had in the past. Even when the original was on the ride in Cali it was missing most of its movie-prop details. (The production had sold off the boat at the end of the shoot. The new owner had de-Orca'd it before the studio bought it back from him for the tour ride.)
-- The scare would be better if there were two possible locations where the shark would pop up. (You would never be sure which place Bruce would pop up on each ride.) It would also split the duties of the mechanical shark into two of them, which would cut down the repair/maintenance schedule a bit.
The Jaws ride in Cali is probably more likely to be torn down than get the kind of overhaul it needs. And that is too bad. I'm too young to have seen the movie originally and I love it.