I've always thought that something called the Bussard Collectors should have some sort of intake on them, so your approach to the nacelles doesn't bother me at all. I like this design. I see influences from several eras and incarnations of Trek in it. I'm going to suggest a name based on an old design of mine...the U.S.S. Horatio. I based that name on an old quote from Roddenberry when he was describing Trek TOS...a sort of "Horatio Hornblower of the stars". :-) Looking forward to you fleshing this out further.