Don't overlook some of the less high profile romantic options, like sharing a shake while you sit together at Sci Fi Dine-In or strolling along World Showcase while drinking a gran marnier slush from France.
For restaurants, I think the lists above are great. Our personal favorite (outside of V&As) is Narcoossee. Jiko is also a great choice, as is bluzoo and Il Mulino. I was less impressed with Flying Fish and Artist Point, but both were pretty good.
I guess "romantic" has different meanings - if you are looking for quiet, relatively kid free, and expensive, you've heard all the top choices. I think the Brown Derby can be a romantic dinner as well, and my wife and I have a great time every time we visit Kona Cafe. Sometimes just sharing a memory at a soda fountain can spark nostalgia, and Beaches and Cream or the Fountain (my preference) would be great for that.
Hope that helps!