Something to keep in mind: a neutral NPR's relation rating with you will steadily tick downward for as long as you have ships in systems that they consider to be theirs, which is IIRC one of the the main reasons why having multiple NPRs on one world/in one system would fail, as they'd inevitably end up nuking each other.
Another thing to remember with NPRs is that if you find one that's in contact with
Swarm, you want to cut them off as soon as possible, or they'll keep feeding them ships.
I thought gauss was point defence only o.O
At least, if you're actually intend to use them.
Technically yes. Dicking around in is a major past time for the players though, so making super gauss ships isn't that uncommon. Besides, with full guass ships you'll have nothing to fear from missiles.
One thing you can do is use them for heavy fighters, though frankly reduced-size lasers tend to be better for that. As mentioned, of course, some people play with gauss-armed ships for flavor purposes.
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Nice, you guys make this so much easier than the wiki.
Is there a way to change military shipyards to civilian and vice versa? What about scrapping shipyards, buildings, etc?
No, and no, unless I'm misremembering something obscure. You can, however, scrap scavenged ship modules, though of course you should first check to make sure they don't give you RP towards any new techs.