Stormlight started out so well but it is having the same sprawl problems that all Epic Fantasy faces. The more characters you introduce, the more plot you have

Stormlight started out so well but it is having the same sprawl problems that all Epic Fantasy faces. The more characters you introduce, the more plot you have to manage and the slower any character moves forward. Too many writers are reluctant to kill their darlings. Even GRRM, who was willing to kill Ned and surprise with the Red Wedding, lost control of all his threads years ago and that is why he'll never finish ASOFAI. It will require too much work to find "satisfying" ways to kill everyone off and lead the plot to an ending.