An alternative concept was suggested to me by another player that the ship be more Defiant-like.
Another idea, actually, is to make it a submarine with a high-surface/hydrofoil-surface running mode.
See? Not only is that futuristic, but it can take advantage of the classic Star Trek ship-based aesthetic elements, much as my design does. The general concept of the Defiant hull would actually be very well-suited to this - you could just smooth it over to suggest a more organic look, in turn suggesting a marine (as in sea) ship.
And yes, Starbase Leatherneck IS named after, and to an extent modeled after and in honor of, the real life Camp Leatherneck in Afghanistan.
It also reflects a lack of imagination, as a tendency of being capable only of being grounded in current events.