The campaign system is great for a small group of casual players. It's relatively simple. You play a game, you gain or lose renown, you get promoted or demoted, and then you get a chance to repair your damaged ships using the systems you control. Highest renown at the end of the campaign period (for us it was 1 month) wins.
What I particularly enjoyed was to use the campaign for developing fluff for an entire sub-sector, and than using the
BFG campaign results to kick start Warhammer 40,000 games. I.E. Because of the character and story development during
BFG, my group wanted to continue the story with
40K!
In my case, we had this bad Chaos Space Marine dude that was commanding the Chaos Fleet. After his fleet was defeated, we decided the space marines were going to go attack his base and try to kill him. (They succeeded) so now we're going to decide whether to do another
40K campaign, some
BFG stand alone games, or a new
BFG campaign!
To me it makes sense. Start a campaign at the highest strategic level, (
BFG, Subsector) than work your way down to the micro level, (
40K, Killteam, Inquisitor, fighting for individual planets)
You can see some pictures on the Graildark Nebulae campaign on my blog.
https://bigorkyworld.blogspot.com/2021/10/the-graildark-nebulae.html