The wings are great on this Destroyer design, as they convey a "lightness" as the BHG destroyer is on the light side compared to other designs.
I think it should be fleshed out and some diagonal/horizontal wings added with all the wings thickened for the battlecruiser. A little upscaling too and a few tweaks might not go amiss to create a slightly different feel to the ship aswell.
And I also think that the BS deserves an entirely different design to the DS/BC as this would follow the blockade runner to [BS name in starwars] change.
