Not sure if this counts or not (SWO made a card for it already), but USS Indiana. I re-painted a spare Massachusetts mini as an Indiana way back in the day (gosh, it's probably been close to a decade ago now!), but I was never 100% satisfied with my effort on that one. I've been thinking of getting a Shapeways sculpt and having another go!
HMS Resistance. I have a list of fictional ships with attack values and special abilities. This ship would be like Renown but with 15 dice and AA Specialist tacked on.
HMCS Sioux is one ship I would like to have a card.
Erwin Rommel - "Give me American supply lines, British planes, German officers and Canadian troops, and I can take over the world".
A USS Robin card for when the HMS Victorious was in US service, something tells me the US could benefit from an armored deck carrier early war, something to give those pesky dive bombers a run for their money.