I have an idea I think most of you will like. It is to have more flags options. I think it would be cool to have a Marleybone or a Aquilan flag to show how much you like that certain world. I would love to have a Marleybone flag because I think Marleybone is a very interesting world and would love to have their flag on my ship.
I think having the same flag as the ships we fight would be confusing, and I don't think the marleybonians would like you using their navy's flag. Seriously, there would be a mistargeting issue. Your allies might waste time wrongly targeting your ship, confusing you for the enemy. Maybe you could have an emblem in the style of that world though. There are already a few regal looking emblems.