Just did a play through with Scalartech. I terminated the Legio infernalis with them. Best Starsector experience i had to date.
I have a question that perhaps is not is exclusive to Scalartech. How do i ascertain the blueprints for the largest ships of the navy? I get the smaller ones at start. Is it only through loot that i may find them?
Once you have 100% status with the faction and a commission you should be able to buy them from the military, or through the higher ups of the chain of command?
It varies by mod and by what the modder desires. Some factions will offer nearly their entire lineup for BP purchase if you get high enough with them (Kadur was famous for this); typically, however, you have to discover the blueprints yourself via salvage. In vanilla, the vast majority of ships in the game can be had in the Low, Midline and High-Tech BP packages, which aren't associated with a "faction" as such, with capitals and very high-end cruiser BPs salvageable as one-offs designs you can learn.
Nexerelin also has you start with a "basic" BP package when you begin with a faction (as determined by any given modder when they add Nex support).
Scalartech is set up in a fairly "vanilla" manner - you begin with the basic ship BP set, and you have to obtain other BPs via exploration gameplay.