Yeah, I really want them back. I enjoyed using them. It's really cool to make "natural" dinosaur parks and preserves and all, but the game doesn't have many more options than that and the selection of hybrids we had were a great way to make something different that was still fun and unmistakably Jurassic World. Freakshows, battle arenas, research facilities. We can do those now, but the options are really samey (big indo, small indo and deformed indo) and it's taken the fun out of it.
Plus, Stegoceratops is canon, Spinoraptor is a fan favorite and even the least popular Ankylodocus still has its fans (like Mjmannella up there I really liked it, I thought its dopey nature gave it character especially compared to some of the fairly drab sets of similar dinosaurs we got in the first game).
I'm pretty sure they will return too. Frontier has the assets, they just need some updating which is cheaper than producing new animals, and new people keep showing asking for them and other hybrids. And while this forum and the subreddit may seem like the fanbase is against it, the "backlash" is always from the same 3-4 whiners hijacking it. Hybrids are very popular and bring publicity - fandom activity spikes whenever they show up. E720 was huge.
I'm a little annoyed about it too, because other parts of the franchise (toys, mobile games, TV shows) have successfully continued adding hybrids and Scorpios Rex being added now proves that despite speculation to the contrary by said whiners Frontier has nothing against adding more hybrids. That means clearly Frontier held them back to sell to us again. I thought making sure everybody who bought stuff for JWE1 got to keep it except the people who bought Secrets of Dr Wu was a pretty crappy move on Frontier's part, and the eventual double dip makes it even worse.
As a sidenote, I'm always confused by people being vehemently against hybrids anyway. I'm sorry, but how have you not noticed that this franchise left you behind long ago?
Like them or not, hybrids are a large part of the Jurassic World era of the franchise and has roots even before that in the Jurassic Park era of the franchise. Even discounting things like the Chaos Effect toys, I'd argue they're a natural progression of the story both logically and thematically.
Even in the original book the idea of editing dinosaurs is floated. Dr. Wu pleads for making a "better" version and Dodgson talks about making cute pet versions of dinosaurs that can only eat branded food. Manifestating appearance of another animal is no worse a logical leap than manifestating the ability to change genders from another animal and they certainly fit the themes of playing god and messing with nature.
Plus, the idea that they're somehow less realistic than giant, murderous naked raptors that can figure out concepts like door handles and the venomspitting rattlesnake frilled lizard alien that passes for a dilophosaur from the first installment of the franchise is laughable to me.