system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Why is there such a huge difference in designs between imperial and rebel spacecraft?

Since the rebels rebelled from the Empire, shouldn't they use similar looking fighters and capital ships? Has the rebellion been going on so long that the shipyards have diverged this drastically? I would say that the rebels might be using obsolete imperial designs except the ships are matched up rather evenly and the rebel ships are not inferior...
gpt
The Rebels aren't using Imperial spacecraft. They're either using leftovers from the Republic fleets (like Y-Wings), ships developed with the intention of being used by the Empire but never acquired (X-Wings), or ships developed independently by people who don't wish the Empire to use them (the B-Wing).

Same goes for their capital ships. The Rebellion may have members who were former Imperial military, but unless they manage to steal Imperial ships, they don't take them with them when they leave.