Off the top of my head i can say Guadalcanal, Guam, Iwo Jima, and Peleliu. Malta is already a map but hasnt been in rotation for almost a year now.
Other maps which would be great though require a few changes (be it size, scale or whatever) would be Norway, Normandy, Sicily, Tunisa, Italy, and Krymsk.
I hope one day that naval EC is a permanent mode, rather than just the weekends like it is currently.