Jiko was our favorite restaurant, especially when Marianne Hummel was in charge there, but has fallen badly in our last few visits. It's only "very good" now, rather than being close to a religious experience.
Sanaa is good, but we found the food there dryer than it should be been, in our estimation.
Cape May Cafe was a pleasant surprise to use a couple of visits ago, especially after so many "forced" trips there in years before, where the place was bordering between mediocre and worse. We've actually gone back again within a year, that's how good it was. Very surprising and perhaps one of the three best buffets at WDW (along with Tusker House and Crystal Palace).
I wouldn't make a special trip to Big River Grille. It is what it is, and unless you're into microbrew, it isn't anything special.
Kouzzina is good, but I think a lot of people go to the place expecting Iron Chef quality food, and that's simply not what you get there. It's run-of-the-mill for WDW, but if you like that cuisine (and we do) then it is worth considering the place.
The Wave is the most underrated sit-down restaurant at WDW. We've been there a number of times already, and it consistently performs, breakfast, lunch and dinner. If you have any reason to be near the place during dinner time, definitely include it.
Chefs de France is perhaps the best overall sit-down dining experience among us and the folks we bring with us to WDW. It's a very good value for the money, even though it isn't cheap. For a 1TS restaurant, the food and service are remarkable.
We recently ate at Coral Reef after many years of not visiting there. It remains a "very nice" restaurant, but nothing that I would go out of my way to visit. If you haven't been the Chefs de France, do that first.
Le Cellier Steakhouse was overrated before it got upgraded. It's probably doubly overrated now.
Rose & Crown Pub & Dining Room is okay, for what it is, in the same way that Big River Grille is, except that what Rose & Crown is isn't something you see at every mall in America.
San Angel Inn Restaurante is consistently very good, and if you like that kind of cuisine, a good choice. I find the restaurant abusively dark though.
Tutto Italia Ristorante disappointed us greatly, both in terms of food and service. Bleh.
Via Napoli was okay, but really the pizza was nothing special, and wasn't even that well prepared.
50's Prime Time Cafe is always fun, and if you've never been there, then you should consider it a must-do. It is the quintessential Disney dining experience.
Tusker House Restaurant is the best buffet at WDW afaic. It's a rare jewel in an otherwise unimpressive array of dining choices at AK.
I noticed you left our absolute favorite restaurant off your list: Artist Point has never failed to not only satisfy us, but amaze us. Year after year after year, it puts out the most interesting and great tasting food we enjoy at WDW, and does so with consistently expert and gracious hosts and servers. You should consider it.