I'm honestly not sure now what will happen with the doors/Tower of Ghenji. They've made a lot of changes to them with Mat going through his door in Tanchico and the whole Elaida door scene. I do think we will get another doorway to finish Mat's storyline. I do not know that we'll get the whole Tower of Ghenji though. The reason for going there doesn't exist anymore.There is the Darkfriend exception which I think is getting the most liberal usage, especially from Moirarine and Elaida if we're both thinking about the same moments.
I bet we will though, because they left it with the question now of what they took from Mat besides just the voices of trauma. Gives them an opportunity to pursue the thread of "what else was in there that might be important."
@Brycc al'Thyran had some thoughts about this if I remember correctly.