[Crazy Jetty]

Personally, I think this line is ripe for a resurrection.
The dinosaurs were very advanced for the eighties, and that's one of the reasons it stood out. I think upgrading the dinosaurs with the most current theories about them, and apply the same principles of futuristic weapons and armor and aliens and stuff, and you could have truely one of the most epic lines ever.
Plus a chance to make a line of dinosaurs that's somewhat realistically scaled.
You can have your basic twopacks which comes with a dude, and a small/tiny dinosaur like Velociraptor, who may serve purposes more like a police dog for his/her partner.
And lets make the dinosaurs fully articulated while we're at it. (As awesome as the jurassic park dinosaurs are, their articulation sucked, just like almost every other dinosaur toy in existance)