I think the Reliant was a good piece of design that basically followed the FJ approach (rearranging and cannibalizing parts) yet added other elements that made it distinctive and appealing in its own right. As it a result it doesn't come across as a rip-off, not to me anyway. DS9's Defiant is another good design that still utilizes the ideas of a saucer and nacelles, but does so in a fresh and creative way wherein they're almost unrecognizable.Whoa, you actually like something that isn't from TOS?I like the Reliant design and the Defiant from DS9I think I'm gonna faint!
(I kid, I kid....)