<impaktor> If the factions are hand written, I'd expect the numbering to
           not be "077...", but 004 or similar

I assume changing pre-fix number changes appearance in system view?

(I'm not sure I fully understand this, but...) I don't think so. It's just the name of the file. I see no reason to change this.

Files are loaded by disk iteration order, yes. There are potential knock-on effects on system generation consistency, but I haven't fully audited the code to determine whether that is the case or not. Proceed with a rename... cautiously.

Actually, given that we've already merged a savebump commit, proceed with a rename with great abandon! 😄

The only think I can think of remaining is the question of a new name for Julian Science. I'm personally fine with the PR in it's current state but more than one person opposed to that name so we should look for a new one I guess. Any suggestions? Anyone?

I see that I've been inconsistent with capitalization in the file/faction names. Which is preferred.
Druello pirates, Tolan kingdom, Julian science.
or
Druello Pirates, Tolan Kingdom, Julian Science?

All faction names are Proper Nouns, and should be capitalized as such. Every word in the name except linking verbs and articles ('a', 'an', 'the') not belonging to the faction name proper (e.x: Polity of Location, Place-by-the-Sea) should be capitalized.

I bumped the Tolans expansion rate to 0.01. That gives them a dozen systems. I had a peek in the sector/system viewers and it's home world isn't inhabited. It has some three gas giants with no moons in it an nothing else.

So it is ripe for a custom system? (not necesseraly in this PR)
A bit ago I've started some lore writing, based on the old lore notes from the wiki. Here's the note on Tolan. I've named their capitol system Seat of Oberon
A dozen systems are a good amount in my opinion. Tightly knit feudal society concentrating on inwards strentgh and steady and patient expansion.
The repo is an obsidian vault, if anybody's interested on working on it.

So it is ripe for a custom system? (not necesseraly in this PR)

Yes. And I think not in this PR.

I have a branch with half done Pirate system, and Pirate Fuel Club: "Gas Guzzler", I don't quite remember if I added something more (perhaps we want to add that to the pirate faction?). My thinking is a pirate system is sort of hidden. What would an entire pirate faction be like? Sounds more like anarchy to me. But then again, there's not that much parameters for factions to tweak to make them distinct.
End of random thought.

Here's the note on Tolan.

Nothing in that link.

Pirate Fuel Club: "Gas Guzzler",

☠️

My thinking is a pirate system is sort of hidden. What would an entire pirate faction be like? Sounds more like anarchy to me.

I agree, it definitely seems weird in the abstract that a pirate organization would become an interstellar faction - however, out in the middle of independent space with little to no government larger than a planetary administration or maybe a system-wide kingdom I could see various enterprising pirates "going legit" and setting up some type of protection racket or feudal-analogue power structure with various worlds being nominally "ruled" by a nomadic interstellar navy.

Amusingly, the system at 4, -1, 9 is actually called Torisay, not Tolisay. That's on me, but I think I like Tolisay better.

Either the faction will have to be renamed (again), or I'll have to find some way to implement custom systems overriding an existing random system while also changing the name (which is used to detect if the system is overridden)...