Here we can see some basic configurations and variants.
are closest to MJ's concept sketches. For myself I'm just not crazy about these even with their altered proportions. To me Number 3
looks like a very early prototype we might have seen in early 22nd century.
doesn't look bad because reducing the size of the forward hull seems to balance things out better visually---in my opinion, of course.
To me Numbers 6, 7
look best. 6
benefit from a smaller forward hull as I think it improves the overall look of the design. Number 8
was an accident as I was mixing and matching things. I just happened to see how it would look if a bit slimmer and it just clicked in a neat way that appeals to me. I think this would work with either a single nacelle or the conventional dual nacelle setup.