Predictions on The Death Cure

The next book in the Maze Runner series is The Death Cure guessing taking right after the events of The Scorch Trials or maybe a couple of months or days later. Im still on the last chapter of The Scorch Trials but I can predict what might happen next to the character, but not the setting because I don't completly know where Thomas is going next. I am predicting that Teresa is gone since what was revealed near the end of The Scorch Trials. The things that i now wonder is since the earth isn't a barren wasteland anymore, who will their new allies and enemies be?