Space 1889
Modestly set spacegoing shenanigans are fun - an inventor or two pooling resources with a beached captain and some friends to explore strange corners of the solar system, archaeological antics, high adventures on Mars...
...I'd only suggest set a limit upon how high ranked people can be (we had a Duchess last time - perfectly lovely character, but there are like a couple dozen of those in the entire British Empire and keeping them out of danger and away from adventure became half the plot) and require folks to have reasons to hang out together.