IMHO it's excelent AS IS.
He never said whether it was meant for FS or not.
It's a modular design, that has some touches that make it more realistic in my eyes:
While elaborate, the general shape is simple and structuraly sound.
The thrust will go through the center of gravity.
Even though it has a clearly defined top and bottom, it doesn't suffer from the sea-ship/gravity syndrome, the parts are allowed to freely flow together in space as they should on a starship, they're not hanging or standing on anything.
While it has gimmicks on it, I can vaguely guess their actual role - that's a very good thing, and hard to achieve.
Finally, the model has the bravery to put all kinds of delicate sensors out there. (Antennas ect.)
While fine, as navalised-spaceship designs most ships I see are also very unrealistic in those regards.
This ship, while not suited to the heavy (and quite unrealistic, but fun) engagements in Freespace, is actually realistic and delicate design, that I could easly see in a hard sci-fi setting.
Good job.
