[MAIN SPOILERS] Dany and the Wheel

Seems like the wheel of great houses Dany was talking about breaks itself pretty much. We have Martell gone, Tyrell gone, Tarly gone, Frey gone. Lannisters soon to be gone, probably, along with Greyjoys.
The wheel is breaking with little input from Dany really. She just needed to wait out till they kill each other and come sit on throne unopposed.