Nico Robin deserves her own show
In terms of writing quality, Robin's story is probably the best, but the series goes from making her a dark and controversial figure into a generic damsel in distress who needs to be rescued by a nose-picking brat who doesn't even understand her problems. She is lucky that Luffy even let her on board in the first place after being his enemy.
It felt more appropriate that Robin end up with the Revolutionaries.
Say ten Hail Marys, five Our Fathers, and the Gilligan's Island theme