Even the best actress in the world cant save Danys Meereen arc, its the worst part of the books, the author has openly said it was extremely difficult to write.
No matter how hard Emilia Clarke tries, her performance will be inferior till she leaves Meereen. Emilia acts well, but will continue to be hampered by abysmal material.
Sansa, Cersei have very nice arcs now, and will supplant Dany for a while.
Anyone who has read the books will know this.
The TV adaptation is very near the books now.
Bran, Theon, Brienne, Dany - ADWD / AFFC
Sansa has sailed into The Winds of winter. It implies she has a lot of chapters in the book, or they would have slowed down her arc. It also helps that the vale is isolated. So her story can breeze past everyone else.
Jon, Tyrion, Cersei are still in ASOS.
Sansa has always been my favorite character, and also Dany. Its a bit weird, Sansa`s arc improves a lot with every book. But Dany starts brilliantly in Book 1, and then it becomes bad, and then we are stuck in Meereen.
The new Sansa - Alayne - will be quite popular, because the other females in the show all suffer from stuck or poor plotlines.
