Why are there no Starfury mods or shipsets for SE4?

[Slick]

I just finished Starfury. Yeah, I know, I have had it since it was released. Had computer problems, was working too much, never reinstalled it; you have heard the story before.

Anyway, I finally met (and mashed) the Sithrack. What a cool shipset! Anyway, it got me to thinking: why aren't there any shipsets ported over from Starfury to SE4? Pirates, Sithrack, etc. It must be some kind of copyright issue, but I'm thinking that such a thing would ultimately enhance both games and result in more sales. A mod could be based on the differences in how the components work; i.e. null space weapons would be seekers instead of beams, etc. Any thoughts?

Slick.