I don't really know what kinds of ships there are for Astartes outside of a Battle Barge, nor do I know what most vessels produced by the Imperium(and used by traitors) wield as weaponry, nor do I know the names of what kind of ground based defenses most planets can have(like Eisenhorn made mention of several different kinds I've never heard of)

The weapons for ships is crucial, as the wiki's tend to just gloss over them...

And my god it is hard to find decent artwork for Night Lords, why does the Eighth Legion get so little love?!