Okay, I've added a bunch of new updates to the YT-Designer, new ship parts. But brand new are the New Hulls, so you can have different designs that just the plain disk of the majority of YT class vessels. Now, not all of these look great with all of the additions (adding engines or mandibles designed for the standard disk doesn't look great on some of the other designs of hull), so have a play around and see what works for you.
New YT-Designer
And now I'm off to do some more code for something else coming to the site.
Freddy