It has a romance subplot even more unnecessary and tacked on than JW's.
The JP4 script is a national treasure. It ends with the raptors basically killing everyone and the main dude gets into like a spear fight with a guy? And this nerdy scientist guy who worked for the bad guys was hiding in a tree the whole time. After everything's over, he climbs down, marvels at the desolation, and then a pterosaur randomly flies down and kills him (there were no pterosaurs otherwise present in the scene). Then the credits roll. That's the end.
It reads like a really, really rough first draft written by a guy that doesn't really seem to give a shit. I'm sure there were later drafts--the "modified" raptors in the script are described as looking fairly normal, the effed up half human dinosaurs from the infamous concept art aren't present at all in the script--but the one we have is just a sight to behold.
Also, there is no tyrannosaurus in the script at all (the only reference is on a poster seen on Isla Nublar), which just strikes me as really, really odd.
Oh, and back when the script came out I drew this attempt at visually realizing the bizarre "Excavaraptors." Or "Digging Killers, or plain DIGGERS" (to quote the script).
Hire me, Universal.