Even with new skins, the mechanics of basically every animatronic but Rexy are in need of a redo. The ultrasaur is in embarrassing shape, and the raptors are abysmal. I second
@Alicia's opinion on the psittocasaurs needing to go too. If they want synergy with the franchise, plop a couple of dimorphodons down. It'd be cool if they kept the ultrasaurs from USH and added to the lagoon, but that is some ultra-wishful thinking.