I am suggesting that the aviary and flying dinosaurs are added to normal gameplay (without DLC), the point of the game is to build and create your own Dino park, well, then why are there no flying dinos on normal gameplay (excluding all DLCs), even though they are Return to Jurassic Park exclusive dinos, they should be added for the following reasons:
To make them harder to get you would have to research the aviary, and the Dino's excavation site, or maybe unlock it by a mission on a division, like on entertainment or science divisions. Then you would have to extract the fossil and unlock the Pteranodon.
- They are found in Jurassic Park the Lost world and Jurassic Park 3 on the aviary on Isla Sorna
- They are found multiple times on Jurassic World on the aviary, attacking the main place and the visitor centre
- They are found also in Jurassic World Fallen Kingdom flying around on the main land
- JWE is a game to build a park featuring, well, Dinosaurs and that is the main point of all. Pteranodons are a dinosaur and they can also be part of a park.
- They would be a unique dinosaur species in the game
- They are not that "special" from other dinos like the Olorotitan or the Ankylodocus.
To make them harder to get you would have to research the aviary, and the Dino's excavation site, or maybe unlock it by a mission on a division, like on entertainment or science divisions. Then you would have to extract the fossil and unlock the Pteranodon.