I'm pretty excited for the Ambassador. It's always been one of my favorite ships.
But it does seem kind of tacked on in an attempt to appease fans, especially if it's a T5 ship. Honestly, it's something that should have been included originally as a mid-level ship.
I also agree with intrinsical
that it would be nice if they started looking more outside the box. Though I say that with the condition they do so with different artists. IMO most of the game-only (non canon?) ships leave something to be desired. They're not terrible by any means, but are certainly inferior to the canon ships.