Weird and unlikely as it is, I'd love some sort of 18th century whaling references.
It's one of the periods of history I find most fascinating and I'd love to see things like whaling ships (vehicles), harpoons (equipment) and a big mythic white whale.
I'd also love it if there was some stuff on things like wrecks and solitude and cannibalism and all that kind of stuff. The intensity of the voyages and the strain the people went under while on them. Think Moby Dick and the Whaleship Essex that inspired it.
I mean, it's definitely way too niche a period of history to be depicted in a magic set, but if it was ever going to happen, a set about behemoths could be it.
And yea, fine, put in some good commander cards too because why not.