That flat look actually was what gave it its' charm. It did not have anything that looked unneeded stuck to it and was made a little for stealth and close work to an atmosphere. The clours were interesting on it and that was a feature I did like alot.
It needed a little work texture work to make me happy but it was easily done, I remved the middle engine and made the colours match the upper hull area above it and changed the deflector colour to a dark blue with light grey for the yellow lines the lighter the yellow the lighter the grey I used. I would have changed the engines colour but I like that blue I might try to use the Integritys' engines on it see how that looks, but I am not that good at kit bashing. I will probably also change the colour of the escape hatch covers to a dark grey or to the beige you used on this one. I think with the darker colours and its roundness it might start to look as a stealth recon/attack ship.
I also changed your Klingon W'ked Class, I made it grey with black lettering and logos in Black and red. It was my first successful texture work I did (that simple means I like how it came out)
This guy I changed a little too. I took the center red engine and turned it black with grey lines. Even in a prototype a shuttle bay will still be a shuttle bay, but the less light it produces the better. Still playing with it though so I don't know what I will keep.