Oh look, I'm was a textwall, nice to meet you!
Ah, I took the Lysander as a example, since THI usually go for Low and Mid tech eras, and because, it's one my favs!

You could retrofit the Shepard to fill a miner role, especially if used in NEX, I mean, if you say they already use that hull, why not fuse it to fit better in their doctrine with their own custom brand of Shepards, I'm SURE the Tiandong would find creative ways around such simple hull. Asking these because these early hulls are so plentiful.
I have been using a mod that changes colonies a bit, so I haven't been making that vanilla DO$H you usually earn from colonies, but then again colonies for me tend to be mid, or late game, early if I'm roleplaying, so I see your argument concerning boosting defenses you can just pay to have all your troubles go away, specially late game, but to fix that, to hire merc patrols it could have some hefty upkeep prices, depending on quantity, quality and other variables
About the
Exigency that you and people don't seen to get, is because of your old mod and how talented it was, I kinda liked the aesthetic of both factions and they had very unique ways to handle combat, specially the Exigency Corp, that repulsor ship system looked very cool, maybe my wording was not precisely on point, I was making a remark if you ever decided to make some High Tech Hulls/retrofits for the Tiandong, to take some features from your old Exigency mod as an inspiration, like that Repulsor ship system for some of hulls, if you ever wanted to do it, of course! come to think of it... the lack of information there was really strange, excuse me on that, hopefully I've managed to convey what I meant.Do we have a way to configure retrofits ourselves and select which ships are viable for retrofitting? Tyrador has a repainted Venture, but I believe that's a faction retrofit, imagine the moral dilemma to retrofit... a retrofit.