You should consider making sure one or multiple bases of a given faction have access to the entire family of generic ships said NPC faction uses. Gaians/LWB/Alliance with Staflier and Eagle lines, Hessians/Hackers with the Sabre line, and so on. I would also consider putting the underused, generic transports (Gull/Grouse/Albatross/etc) on shipyards of corporate and CTE-using factions, as well as increasing house civilian transport availability on unlawful bases.
