In Dance, A Song of Ice and Fire has widened its scope as far as it has ever been, with action taking place everywhere from The Wall to the Free Cities to Valyria to Slaver's Bay in the east, with a good amount of new characters and locations in view. Later in the book, we even get back to King's Landing and Dorne. Many of the POV characters are, or have been to this point, relatively minor, but seeing the world from their eyes does a lot to flesh out the happenings in Westeros and Essos.
It feels like much of the Essos action is converging on Daenerys, as Westeros continues to tear itself apart. It's obvious the purpose of the Ironborn in the books is to give Dany a fleet back to bring her host home. Tyrion will be her Hand or spymaster or the like. Aegon will win Dorne away from King Tommen, and I suppose Stannis dies heroically while mopping up the Boltons with the help of the wildlings, hill people, Manderly, and the crannogmen of the Neck. The Freys and the Lannisters will fall to Arya as a Faceless Man, and Dany will take the Iron Throne and then ride dragons with her nephews Jon Snow (himself a son of Rhaegar Targaryen) and Aegon (Jon's slightly younger brother of the same father) to the heart of the lands of winter to kill the dark god up there with Bran's help. Rickon comes out of the woods to rebuild and hold Winterfell, the hardiest Stark ever seen in the North. Sansa kills Gregor Clegane in the Eerie and holds it as Warden of the East, Jaime kills Cersei after Myrcella and Tommen both die because of her. Stoneheart kills Jaime, is reunited with Arya. Varys and Littlefinger duel at Cyvasse in Pentos. Fin.