Yet rides like Jungle Cruise, the Safaris and pre-destruction Jaws were all loved because of the available improv to the ride hosts... Even Tower of Terror has a fantastic array of experiences available to guests throughout the ride... Terminator 2 as well can be added to the list...
There's a set dialogue blurb of course, but then the host can do what they want with it... Considering Zufari's dialogue is A - Crap (the Rhino dung and warning signs sections), B - Makes no sense as you never meet Chase in the pre-show now (Not that it did in the first place) and C - Dependant on the animals being out, it's not a very good experience in the first hand...
In fact, the attraction itself is inconsistent due to the animals and their behaviour... Having a driver be in charge of the dialogue would improve things a lot more, because of being able to adapt to the whole thing as it changes on a constant basis... It's extremely boring and confusing to have silence because there's an animal in the way and you can't see it, or that the traffic lights are red and you're still sat in silence...
So basically, long story short, improv would be an improvement... Unless they think that means more Gotzee, it which case, it should go away...