I actually prefer the look of the first one, it looks like it has a lot of "Eagle" in it's ancestry.
As for it being too 'flat', have a good look at the IMG 'Hydra' GB next time you see one, those are pretty flat imo.
What is the size of the original model against say the Libby GB or Dread? Maybe if we could see what it looks like against an ingame ship, a better comparison could be made....