“Not sure I understand how a ship based on one of Matt Jefferies' earliest sketches for the original series is a “post TOS source or influence” or how it's any less valid as a possible design starting point for the Archon or Horizon than say one of your own designs based on early Jefferies sketches (that I would assume were also rejected by the man himself). I mean, it's your fan art and you do you, of course, but I'd appreciate a somewhat less patronizing tone if someone's going to suggest something that's not to your personal liking. Frankly, it's completely unwarranted, seeing as these are people interested in your art, and I see it way too often from you. Please try to work on that.”
^ I think I can explain that. In the early 1980s, I published a large poster set that had as one of the designs featured a ship based on the Jefferies sketch from TMoST. I called it the “Horizon-Archon class” and gave a class listing that showed those lead ships had been lost. My design hewed pretty closely to the Jefferies sketch - probably too closely because the spherical primary hull looked just… too big.
A few years later the familiar Daedalus class appeared in, iirc, the Next Generation technical manual- a collaboration of Greg Jein and Mike Okuda, I think. They fixed the proportion problems of my version, but their ship departs more significantly and noticeably from that Jefferies idea.
So Warped is right - the Daedalus is really something that would not have existed in the 1960s. It is a refinement of Matt Jefferies’ idea. Given the premise of his project, it would be questionable at best to assume Jefferies would have finished his design the same way Jein and Okuda did, or that he would even have assigned that design to Horizon and Archon as I did.