I'd like to see a sequel series where Humanity and Cylons have come to some kind of truce or alliance (kinda just retcon the finale). Bring a different dynamic to the franchise than just humans vs Cylons. Maybe they encounter an alien enemy, maybe they are fighting against different factions of humans/cylons who disagree with the truce. Now that I'm thinking about it it sounds a lot like The Expanse, so maybe it would be redundant anyway.