I chose number three because I thought it would be the most interesting to see.
Like Malte I would have liked a sequel more in tune with the original movie, darker but not melodramatically "grimdark", and I think that making the characters a little older might give new story material.
Although I'd really like to see the Gang being older, I chose 'no changes' because the chance that they'd fail would be higher if they are older.
You may be right if this was applied to real dinosaurs, but since they live in the safety of the Great Valley the gang has a much better chance of making it to adulthood.
