In a way, Layos helped Edinburgh.
Layos' infiltration only amplified Edinburgh's intended effect on its masses. The involvement of a foreign force in the kingdom's affairs served as a metaphorical glue that made the populace stick together. The threat of a foreign force mitigated the differences and allowed them to see themselves as part of one unified kingdom.
The Sages and Grandmasters disappeared from the scene. Altair Argas talked briefly with Eren before leaving. He invited Eren to his estate in the capital city. Eren agreed to the invitation. He decided to visit House Argas in a few days to catch up with Altashia.
Eren was seen talking with Altair onscreen just before he disappeared into a flame cloud. The butcher used Blink to get away from the projection field when he found out it was focused on him.