All right, here's the thread for brainstorming a campaign for Uncharted Seas.
I'm referencing the historic state of affairs in the Caribbean during the 17th century for ideas. I'm thinking the Iron Dwarves are comparable to the Spanish, maybe the IH to the British, and the Dragon Lords are something equivalent to the Mesoamericans with ships and mysterious magic. Of course, the Bone Griffons are equivalent to undead pirates attacking everything afloat.
A big component I'm working on here is for land operations. For a campaign I'm thinking in terms of friendly ports so players can have damaged ships repaired for free in friendly ports but need to pay for repairs in neutral or pirate ports. Also, ports can be captured and forced to change alliances so that the objective of the campaign is not just to sink as many enemy fleets as possible but also to capture and convert ports.
When it comes to land operations, I'm thinking of infantry units rather than actual landships, aiming to capture the feeling of marine operations involving bands of pirates rather than massive war machines. Maybe a "large" land unit can be an artillery battery--not much movement, and it can either move or shoot but not both. A medium land unit could be a battalion of grenadiers or line infantry, capable of hardly affecting fortresses or ships but dealing serious damage against other infantry units. And small land units could be the equivalent of light infantry, skirmishers, and landing parties--they might not be able to attack a medium or large land unit directly, but they might have special MARs which allow them to work as sapper units, blowing up fortress walls, etc.