Of course the issue is that the Defiant Warp Core was the smallest we seen with serious power potencial and still was far bigger then that, only thing as small could be the Nova-class that I shall remind you was limited to warp 5.
There will be a supernova from the Empire if the Guramba were to be made a Fleet version, and would be interesting to see what kind of improvements it would have. I know many were hoping for one when the Starbase/Fleet Ship system first came out.
10% more hull and shields, an extra console (doubt it would be Tac) and maybe a Universal Ensign for a bit more flexibility but honestly the first 3 would be good enough.
I was once DKnight1000, apparently I had taken my own name so now I'm DKnight0001. If I ask you a question it is not an insult but a genuine attempt to understand why. When I insult you I won't be discreet about it, I will be precise and to the point stupid.