Slornie: Yeah, I know how much work it could be to implement this to the maximum possible level, but doing it for a few planets isn't too much of a list. I'm specfying Corellia because they did sell to both sides, and private users, and pirates, and pretty much everyone else, but the Mandalorians' and Kuatians' technology certainly did wind up in the hands of different factions often enough, especially during this time period where the New Republic was in its infancy and couldn't source ships and vehicles effectively as they lacked a dedicated war industry, and the Imperial military complex was in disarray and collapsing, and thus resorted to supplementing their forces with increasingly ragtag units. Also, in some cases we're rewriting history in the course of our campaigns, taking Kuat as the Rebellion is something that happens often enough. Given a hypothetical occupation, whether they liked it or not, they'd be building ships for the Republic cause. Military expediency trumps all in war, and the deciding of moral stances is in my opinion is better left to the player than the dev- if possible. I would buy off the Hutts, as either side. And the Hutts would sell, albeit possibly at a mark-up. The Mandalorians are already portrayed as being forced to provide military units to the Empire in several sources, at least one of them modern canon. Besides, they were just examples- there are plenty of other choices, and different specifics of implementation.
I also don't expect a new model if one isn't available, or a lot of work done on the maps- I am learning the hard way how much work they can be, though I'm having a lot of fun doing it- but simply making a shorter version of the list that allows production of Golans, maybe even a separate single-planet list for each world, would not take anywhere near that long, and it's not like every single world offers unique units in canon anyway. There's maybe fifteen or twenty that are priority for this- Incom Industries on Fresia, as they were an Imperial company anyway contracted by the Empire to make fighters (which said Empire could really use a few of) is another big example, and maybe Muunilinst, as they happily sold to anyone and everyone. Hapes could provide access o more than a single small batch of Battle Dragons. There's a lot of planets this could apply to, and most of them are strategically relevant in most galactic conquests, changing hands often. I think it'd add a lot of personalty to them, and some of them need it, especially given the ground maps being repeated makes a lot of them feel samey.
A lot of suggestions I have made have been somewhat offhand; I don't consider them that important, or acknowledge their cost-to-effect ratio is lower than existing projects. This, though: this I believe is well worth it, and worth a little pushing. The planets and shipwrights that did sell to both sides should be represented if possible, and the implementation for first-iteration testing is marginal compared to some existing projects. First test can be Correlia or Fresia alone, and just test functionality for selling X-Wings and CR90s etc to any owner. Hell, now I think about it, there doesn't even need to be a buildable, just a simple code block, implementing a new planetary bonus type, which permits the construction of new units at starbase tech level, which has a short list. No player interaction or wasting of resources/balancing needed. I think it might be worth a look into, at least.