My biggest gripe is they have completely ruined the T-Rex at the end. The way he appeared through the smoke waterfalls and lights then followed your boat down the drop was just epic and the highlight of the whole ride. Now he just appears with no smoke or water and most will be distracted by the other animatronic on the left. I suppose at least he is still there..
So I've heard that the new animatronic to the left isn't actually finished yet. Right now it's just a head and very far from the T-Rex, but apparently once the entire body is working and gets installed, it'll look better and will be closer to the T-Rex. But even if that's true, I have to agree with everything you said in your post above.
The T-Rex doesn't feel intimidating anymore, and it doesn't make sense either. She's meant to be fighting the Indominus Rex in the final scene, but the T-Rex still snaps and roars at the boat? Even if the scene was actually complete, and the two dinos are fighting and just as you drop, she snaps at you, it still wouldn't feel right. It's as if you're simply a spectator in the scene, and you just happen to be there. Whereas in the original ride, the riders were part of it and the T-Rex was after you, it felt inclusive. Whereas now it's like "Oh look, two dinosaurs..."
I do like the water tank scene, I think the screens look pretty good. But the cracking glass at the end? Why? I don't remember Jurassic World being built to poor standards in the films, why is the glass randomly breaking now? Why not before? I don't know, it just doesn't fit to me. Things haven't started going wrong yet, so why is the tank malfunctioning?
Also in the original you see the damaged boats and then take a diversion, only then do things start to go wrong. In the re theme things just randomly go wrong with escaped dinos whilst you are still following the correct route?
This. This this this this this. The middle scene is just so random, but also manages to feel cheap and lacking as well. Actually, the whole ride feels lacking now tbh. And I know people are saying it needed a refurb because it was looking old and tired, and I agree, it was looking drab. But they could have just refreshed it and marketed it as simply that. I know the marketing higher-ups and the execs wouldn't like that, because money, but I just wish they did that and maintained the charm of the original. This whole new thing feels equally as soulless and on the nose as the Jurassic World films did.
TLDR, I'm not a fan.