100 Light Years War

The working setting premise is . . .

The Hundred Light Years War

Something along those lines will probably be the backdrop, whether it is about to happen, it just happened, or it is happening right now is to be determined.

Interstellar travel will probably be variable duration from point to point, so likely a hyperspace/warpspace type. Star Trek transporters - very probably not.

More here as things take firmer shape.