5. The Gorn
Best known from the original series episode Arena (AKA 'the one where a shirtless Kirk fights a walking lizard'), the Gorn have been underexplored in general in the series and even in the novels.
The second Trek film would be a great opportunity to see more of their world and their culture – even though you wouldn’t get to explore as much as, say, a multi-episode arc on one of the shows, we’re sure it would still be a fascinating glimpse at the race.
Plus, given the vastly increased movie budget and effects technology, JJ would finally have the ability to portray the creatures properly.
But after the shonky CG version on TV’s Enterprise, maybe the men-in-suits approach would be wiser. Just make the suits better.
Next: Mudd In Your Eyes