Actually, having 8 jaguars would be an ADVANTAGE for Jacksonville! They never display more than 2 or 3 cats at a time -- they rotate them in and out of the exhibit. But since they have 8, that means there's always jaguars in the exhibit. In Seattle, if one of their jaguars is sick or receiving care, that means they have one less jaguar to see.
As for the Mayan temple theme, that's not a matter of "better" or "worse", it's a matter of personal taste. Some like the Mayan temple, some don't. It's as simple as that.
But I'm NOT going to say Jacksonville's jaguar exhibit is better than Woodland Park's Jaguar Cove. Why? BECAUSE I HAVEN'T SEEN JAGUAR COVE YET! Thus, I have no credibility to evaluate between the two. I have, however seen Jon's video of Jaguar Cove, and based on that, I like Jacksonville's slightly better -- slightly. But I won't know for sure until I actually Jaguar Cove for myself.
Seattle only has one jaguar go out at a time. While I am sure that is great for the human visitors to see a jaguar in view it is not always best for jaguars. They are very solitary, and at the Miami Metrozoo the two jaguars are kept in two separate enclosures. Allen, I don't think you would like Miami's jaguar exhibit, they are always hiding and they really dislike being out in their exhibit. I was lucky the other day to see the female jaguar exploring her stream and playing with a stick. It was at 10AM and thus I had the whole experience to myself. Quite a treat.
I wish I could only evaluate exhibits solely on seeing them in the flesh, but if that were the case I would be barely evaluating any at all, but it is something I love to do so I simply evaluate from photographs, reviews, and videos.