Careful! "Unique" has no significance as a word! Something that is "unique" is clearly still able to be commonplace, by the interpretations of this forum.
At any rate, you know it would have been Defender... and then wed get nothing but "WE HAVE TO BLOW UP **ALL** THESE KLINGON SHIPS!!! THEY'RE WHATS CAUSING THE KLINGONS TO ATTACK!!!" every time we load into a kill 6 patrols or deep space encounter mission.
Or worse, Foxbat for the Klingons... That away team encounter wouldn't end well.