Things you'd want in a sequel
*Obviously, improved graphics (especially on the humans) and AI.
*Triassic dinosaurs (Plateosaurus, Anchisaurus, Coelophysis, etc.).
*Pteranodon.
*New dinosaurs such as Compsognathus, Baryonyx, Carnotaurus (maybe with that color changing ability from the Lost World book), Sauroposeidon, Lambeosaurus, Protoceratops, Psittacosaurus, Pachyrhinosaurus, Iguanodon, Megalosaurus, Utahraptor, Scelidosaurus, Deinocheirus, Therizinosaurus and Eotyrannus.
*Being able to walk through the park as a human (i.e. visit your own park); it would be great fun to get into a dinosaur enclosure like this.
*Removed glitches/mistakes (no more rampage warnings when a dinosaur is actually in a coma, no more dinosaurs dying of dehydration in the middle of a lake or sleeping while submerged in water).
*No board complaints about visitors killed by tornadoes (how are you supposed to stop a tornado?!).
EDIT: Better physics; I want to see dinosaurs struggling, dragging each other, etc. No more 'chase-bite-fall-eat' routines.
Compromise: we descend from apes who ate apples