Like anything that large your probably going to be running a scenario around it. Something like a surprise attack with the blackstone would work, check the armada docs also the assault on belis corona could be adapted too. You can always come up with your own too. And you can use them as the base for any large space station project too, using the rules for an imperial blackstone, of course this will also probably be the focus of your scenario unless you really just want to blow alot of points on a defense
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