For those of us who enjoyed what little bit of Daenerys and Tyrion ruling Meereen last season offered, the first half of "Stormborn" witnesses a series of high stakes planning sessions with the big players of the Targaryen alliance: Tyrion, Varys, Grey Worm, and Missandei. Also in the room are the allied powers of Yara and Theon Greyjoy, Lady Olenna representing House Tyrell (as one of the last living members), and Ellaria Sand representing the Dornish.
Of course the Tyrells, Greyjoys, and Sands advocate for a quick and immediate attack to take King's Landing; none of those houses have ever risen to take the Iron Throne and have little experience leading. Olenna, who Dany recognizes as having the most experience, was unable to keep a Tyrell within throwing distance of the throne despite all of her guile and skepticism over clever men (although didn't she conspire with Littlefinger to poison Joffrey?). The two Greyjoys haven't actually ruled the Iron Islands, with Theon having not even grown up there, and having a disastrously short occupation at his old home, Winterfell, in Season 2. Ellaria Sand might have the loyalty of the Dornish people, but only because she dared to avenge Oberyn Martell, not because she's been a good ruler.