I remember seeing someone in the last video suggest putting more of each dinosaur every in-game year or two, and just add 2 of whatever dinosaur that got wiped back in. Though, I'm not sure if you'd be willing to do that for next time.
I created my own dino ecosystem because of these videos. I started with herbivores and after an hour or so I realised I didn't have fighting on. I decided to make a group of each dino and let them establish their own territory and then turned on the fighting. That was the craziest shit I'd ever seen 🤣, in about 30 seconds at least 40 dinos were killed, eaten or critically injured. I also had the aviary and water area, the craziest thing was the first marine creature to die was the Mosasaur.