I didn't know Probert designed the TNG logo. I always sort of assumed it was Mike Okuda, since he was the show's graphic designer.
What I gathered about Probert's ship design was that it was something he did as a speculative alternate approach to the Enterprise -- basically, "If I were given free rein to redesign the ship, what would I do?" I believe that the painting he did, though it was indeed the starting point for the E-D, actually looked more like (and was the basis for) the Ambassador-class E-C.
What I gathered about Probert's ship design was that it was something he did as a speculative alternate approach to the Enterprise -- basically, "If I were given free rein to redesign the ship, what would I do?" I believe that the painting he did, though it was indeed the starting point for the E-D, actually looked more like (and was the basis for) the Ambassador-class E-C.