- All animals and themes from PZ1 return
- All the new QoL features from PC2 (new paths, foliage brush, that amazing lighting system)
- Fixing old hitbox issues and add the ability to remove hitboxes from items
- Revamp the older animals to bring them up to standard
- New animal personalities and better herding behaviours
- Complete revamp of exhibits (honestly you could restart the exhibit roster from scratch...), make them a modular system which can be linked together... Maybe 1x1x1 blocks as the smallest? But honestly I'd be happy to see even smaller than that. Make it so exhibit animals have space requirements, breeding etc, ability to mix species and such and more customisation with the additional objects. Also ability to remove the walls and ceiling and some different shapes from just squares like triangles, circles, semi-circles etc.
- Flying birds: Larger birds (1m wingspan or more) would be habitat animals that need to be in a covered space (maybe an aviary building system similar to the paths and pools in PC2?) and could fly using certain enrichment items from different points but would otherwise have full interactability. Make smaller birds exhibit animals which allow them to remain fluttery and exhibit more natural looking behaviours even if its loops.
- Fully aquatic species: Fish and other small animals would be in a new version of exhibits which are basically just aquariums, allow for many mixed species and also tunnels. Larger marine animals (sea turtles, cetaceans, manatees, sharks, rays and other larger fish) would be habitat animals in a pool or tank system reminiscent of ZT2. Allow for some fish exhibits to be placed in the ground as ponds potentially?
- Improve the guest and staff AI
- Co-op multiplayer! It would be really fun to build a zoo together.
- Generated zoo maps similar to Zoo Tycoon 2
- Seasons, this would make management a lot more fun.
- More special events for Challenge/Franchise mode to make management more interesting.
- Custom map skirts
- Multiple habitat gates per habitat please!!
- Animal shows! This would be particularly great for flying birds or marine mammals, and would be a sort of stealth way to add "free flight" to some of the larger birds while keeping them as mostly functional habitat species.
- Eggs for birds, reptiles and the platypus - Incubation and such would make management more interesting and different.
- Allow us to fully customise animal stats in sandbox mode.
- All terrain textures on every map.
- More education features and tours for guests.
- Make the iguanas habitat animals please!