So first I'll answer your question: The gondola in this game is kind of ridiculous, I agree those supports are much more cumbersome than the monorail and are going to block important sightlines. I also think the cars are oversized, oddly shaped, and a definite realism killer. The monorail, at the very least, will blend better and be less obtrusive.
Personally, I don't like either of them. If they had done the one-way turnaround with the chairlifts like Planco has I'd have gone that route. But I think for my zoo it's just going to be the train.