Imagine an extended time of peace and alliance between the Federation and the Klingon Empire, right before such a time as they might be willingly and peaceably joined into the (now ever growing and progressing, seeing as how the Borg have been beaten and the Dominion deflated) Federation. Imagine what a Klingon warship might look like... totally Klingon, but with much Starfleet influence, even to the color schemes.
Imagine holdout empires of the Romulans and Cardassians or such and then one of their advance outposts picking up an image of a fleet of these shimmering blue BOPs and maybe even Vorchas camping out right on their borders! Imagine them turning on the viewscreen a year later and the same ships are still there on their borders, but they've got the Starfleet Comet and Star logo on their hulls!
That'd make a good scene for a future Trek series!
Oh, that Enterprise would be continued for at least another couple of seasons!