Lord Ibelin's 'household' dynamics remind me of Lord Hascal (Darien) and his camaraderie from the beginning of the series. Sebastian's bargain involving Eric's body mirrors the similar situation with Ashot, Stephen, and the Emir. It seems Eric may have to draw the same boundaries for Sebastian that Stephen once drew for Ashot.
And now, with a perfect mask, are they really going to fool Baldwin? More importantly, will they stay unrecognizable to Wylan and the others at the same time? It's a rather paradoxical situation - Baldwin is not supposed to recognize them, while Wylan should recognize Ishan. The challenge is making one deception work without breaking the other.