This has been a major problem with the series since the first one. Its "jurassic park" so you have to keep coming up with dumb excuses to keep going back to dinosaurs. Kindof like how Terminator movies, keep having to make dumb excuses for time travel, skynet, terminators, etc to be the same over and over.
The first movie has Ingen creating the genetic engineering. And a rival Corp, BioSyn pays Nedry to steal the embryos. They do not give a shit about the dinosaurs, they want the genetic engineering technology, to reverse engineer it, and use it in other fields. It was literally part of the plot of the first movie, that had to be dropped. to keep going back to engineering dinosaurs for some reason.
Any logical movie follow through, would of course need to address THAT. this bioengineering would be used on everything. humans, cats, dogs, cows, etc. There would be Wooly mammoths, sabretooth tigers, bring back Rhinos, bring back dodos, etc. human organ farming. The Island movie, would exist in this new Jurassic park world. It makes perfect sense for a sequel really..
The NEXT movie then would logically involve trans-humanism, with humanx?? genetic hybrids. As they move past just cloning, and slight genetic engineering, and start going really hardcore into splicing different species. Giving humans the ability to breath underwater, etc, etc.