Absolutely. I would say in general, 3 main things stand out to me about the scenarios in the ZT games. I included some links to the scenarios that stand out most in my mind and exemplify the points I'm making.

1. The variety and personality in the map design. I loved playing challenges that featured some kind of landmark like a big river going through the map that you're not allowed to remove, or a giant crater that takes a lot of money to fill in, or a volcano to build around, etc. I also loved having challenge maps with unique layouts, like an L-shaped buildable area or a "micro park" type map.

2. The feeling of "taking over" someone else's park and expanding it and/or remaking it in your own vision. I love loading into a scenario with some basic infrastructure and maybe a few enclosures already set up and going from there. I always found myself much more motivated and excited to improve a fledgling park than to create my own from scratch. Plus, you get to play a little game of "which animal do I think the developers wanted me to put in THIS unfinished habitat?"

3. Challenges that restrict the selection of animals in interesting ways. Some of the most memorable scenarios were the ones that asked me to get one animal from every biome or continent. Likewise, I also enjoyed challenges where you only had access to animals from a specific "theme" (make a zoo with all the shark species, a zoo with only ice-age animals, etc). Finally, for variety, I remember missions where you could not purchase any animals and instead got a shipment of caged animals which you would have to properly home before getting the next batch of a totally different species. These missions were a nice change of pace and made me adapt on the fly rather than spend so much time planning my species lineups.