I think saying it was wasted is off the mark, because it served it's purpose in the first film. As for the second and third films, yeah, I'm a little disappointed it didn't show up there. The Lost World I'm sor tof ok with, but with JP3, you can't even argue the Raptors and T. Rex had too much focus again, because the Rex has less than five minutes of screen time, and besides two major scenes with the Raptors, most everything else that attacks or is featured were new animals. So the Dilo could've shown up. Then again, JP3 has always rubbed me the wrong way that it only has 3 expendable characters and two are killed by the Spino within 5 minutes of each other.
JW now, yeah, that was a pretty wasted scene. Nice cameo, but there was no indication of one being in the park, or any still being alive. At least they got some decent scenes in the Telltale game.
Make the Sayles JP IV script into an animated series! Admit it, you'd watch it.
"We'll use the Force."- Finn
"That's not how the Force works!"- Han Solo