I don't use ingame parts to make ships everything is custom made our converted because with my ships I made it where the parts are on the inside of the ships.That way they don't have ugly parts all over them.And maybe one day I might release them in a seprate pack.Im pusing for a summer release since theres no new technology its a easy mod.
You might think about making, assuming your making them from scratch, jewels instead of whole ships. One its never been done which would be cool, two there are not a whole lot of cannon ships and only so much fan stuff out there to fill out five complete ship styles, let people make there own ships and the burned is on them not you to make what ever ships they want, also would be cool to see what they come up with.