Tucked away landing gear are pretty common so not sure that would be a big design concern, but if you come up with something interesting I'd love to see it. The engine pylons specifically are something that could benefit from attention. And the hull could maybe be broken up into more than four planes. Maybe narrowing between sections like the cockpit and the rest of the hull to give it more of a neck appearance. And yeah, anything that can be borrowed from the YT series to give it a more consistent feel in the CEC line, maybe some window designs or a much more broken up hull, that still conforms to the general silhouette. Basically, I wouldn't be afraid to go greeble crazy, there won't ever be more than one on screen at a time.