I didn't like the third one, but I can't see what's wrong with Jurassic Park. If it was unpopular, then there would not be another one in the making. I hate films that contain violence the whole way through, but I'm sure there's people who would prefer to watch a film full of death, than seeing dinosaurs chasing people. But that's up to them.
I liked JP 1 and 3, just so ya know.
Anyway, Doc Oct and Lizard are good choices. I'd like to see one with Venom definitely. There were a lot of subtle mentions of Spider-man's enemies in the first one, like when J.J. says something about their photographer, who ends up as Venom, and Peter says he lost his job as the proffesor guy's assistant, who then becomes Lizard.