A couple of the potential issues they have with WoT...
Having all "main" character share fairly equal time on screen and on character development so the audience can grow to like any of them - as opposed to making it the Rand show perspective and only having the others come to the forefront 3 years down the road...
Having an actor play a five minute role in one episode, and have them return as a much more significant player 4 seasons later. Not really workable, so characters and their storylines will need to be shifted around if they do want to introduce them in the story.
I think this is falling into one of those "inspired by" rather than a literal following. I'm trying to keep in mind it's a tv show, not my books, and that the showrunner has really been engaging with the fan community at large for the last two years to manage expectations and explain why and how changes are being made. Not just slapping you with a wet sock in the face and leaving it at that.