I reeeaaally like Cersei/Euron and Victarion as Valonqar - FINALLY explains 'when your tears have drowned you', i.e. Cersei embraces the Ironborn, possibly their religion but definitely their king, in her desperation. That'll teach her to reject the 'old squid'!
In this interpretation could Brienne be the younger beauty and get Jaime happily?!