Good point in allof the jp movies there is always a main vehicle destroyed like in jp it was the explorer, tlw it was the trailes, ands in jp3 it was the plane its almpost like making the same movie bla bla bla a t-rex attacks bla bla bla theres a scene with the raptors bla bla bla
We arent willing to murder the guilty but yet we slay the innocent - unknown
Actually, I meant the human motivations. Just look at it this way, they always go just to the island to get stranded and eaten if they're stamped as red shirts. In TLW there's also the unoriginal Godzilla homage using the T-Rex. I'd rather have seen Raptors taking San Diego instead of the Rex. Like, after Ludlow gets eaten at the Rex nest the boat meant for the dinosaurs leaves the docks that it was anchored to but with secret stowaways. This way they reach the city. But enough with that, the point is that the humans didn't show realistic sides as they only do what the pre-established story demands them to do. During the entire franchise only the actions of the first movie's cast had been fresh in any ways. All TLW did was repeat the monster genre(original Lost World, King Kong, Godzilla) without pulling any approaches of it's own. JP/// also rips off King Kong with the fight and the human cast consists of silly beacons with no good motivations to be there. Even Grant is really a sellout here. So I'd say this has only affected the way JPIV can have any fresh plot points. The dinosaurs are the selling point but what makes them unique in this story is in the way they exist to begin with. Honoring this becomes difficult when the foundation itself is based on cheap human motivations. That's simply because this version of the novel story Crichton created has been sugared too much by Spielberg's child friendly attitude thus what has led to the jam in ideas is that there has been too much gimmicks. There must be a clean plate to start from again which means ignoring the majority of motivations from the previous two movies as those cannot be relied on again. The locations are not the problem but how they are handled. If the story isn't done right the mainland will be just another excuse to lazy handling of something that's nifty on the surfase but neglected from the core because of the said handling. And that's the story. JP isn't about JUST dinosaurs but also what brought them back and our responsibility regarding it. So a new location simply isn't enough.
BioSyn would indeed work as the antagonistic force. With InGen's catastrophic failure with what it was messing with it would be now up to the hero cast to prevent BioSyn from repeating those errors with more severe results not only at the island but also the mainland, both which would be major setpieces in the movie. The Dilophosaurus could also be brought back as a badass adult without a frill that hunts in packs. And then there's the Velociraptors which could appear in two competing tribes, the original reptilian ones and the more avian version. Then there's the T-Rex and Spino which both deserve equal share over the running time(be nice, kids). And let's not forget the chameleonic abelisaurid Carnotaurus(doesn't rely on skin accuracy to have this ability). But you also need to make the story just right without hatching more silly reasons for humans to be irresponsible hypocrites nor complicate it with pointless dialoque when you can simply show the plot points visually. This story has to work and that's because what makes Jurassic Park unique is that not only are dinosaurs real extinct creatures but in here they also have a good reason to exist again. That reason must not be ignored!