No no! Tyrion is there! He's just really hard to see. He is in front of Cersei - just to the left of Sam's head. I tried to move him so he'd be visible but short of putting him front and center or on the throne platform itself, his...erm...height makes it hard.
Oh my goodness, so he is. I can't imagine how he escaped my notice--just his fate, I suppose.
Anyway, splendid work. My favorite here is Arya; I like the Rainbow vibe she gives off 