Human gameplay would simply be putting yourself on human ground level immediately, This would help for accurate Size estimations, BUT also in this mode if a Dinosaur broke out, You would risk being attacked and killed (Optional in settings for people who just wanna get a ground view of the Dinosaurs), Also there would be crouching Mechanisms and you could possibly Run your park from the Human ground view! (Kind of). And it would be EPIC to go look at dinosaurs from Guests POV.
Now the second part of this is the stupidest thing I will utter because I know it will most likely be put down due to the fact this game isn't even of the Genre, But the thought of PLAYING as a Dinosaur is AMAZING, Yeah sure there's other games that do this but the Ability to do this in Prehistoric Kingdom and having a perspective of your Park from the Dinosaurs eyes would be Amazing, Like being able to WALK around and explore your Enclosure would be SO COOL!!! Especially breaking out, Now I have no ideas how fights could work but Maybe it could be like Pokémon battles with turns?? I don't know- Just some stupid ideas I had randomly.