I'm going purely off my imagination and theories, so it's nothing set in stone of course, but if "the rumor" theory is true, it affects KL, and if Dany makes it to an affected KL she possibly has to head elsewhere in Westeros for answers and may end up engaging in a different battle...in either case, there are like fifty leven things going on with KL (Margery playing the septon, who takes over is the lannisters die, etc) it's not as engrossing as bran or Jon's battles, but it's part of the bigger story. I hate Danny's storyline, but it's connected to so much more that I can't just be like "cut this shyt"