There may be a love interest or a supporting character like an old-timer who has been on the waterfront for years. The love interest could provide motivation for the protagonist to make changes, and the old - timer could offer wisdom and historical context about the place and how it has changed over time.
Another theme could be the struggle for justice. The characters might be fighting against the unjust system that prevails on the waterfront, whether it's unfair labor practices or the power of the corrupt elements. For example, a character may strive to expose the wrongdoings and bring about a fairer environment for the workers.
In the Joe Bell story, Joe Bell could be a figure representing hope or change. He might have been someone who saw a problem in his society, like poverty or inequality, and decided to do something about it. He could be an artist, a businessman, or a simple laborer. But whatever his occupation, his actions and decisions would be what define him in the story. He could be remembered for his courage, his innovation, or his unwavering belief in something greater than himself.
There could be a kind-hearted truck driver who gives Riley a ride on part of the journey to Minnesota. This character could offer some words of wisdom to Riley during the trip.
One idea could be that Annie and Riley start a business together in the 90210 setting. They might face challenges like getting investors and dealing with competition, but their friendship helps them through.