A lookback scene. I personally had been waiting and hoping for this scene since that great Galad POV in KOD (if not earlier, when Morgase reflects on Galad's safety when dealing with Valda). I felt totally cheated that their reunion happened 'off screen' in TGS, but I'm giving Sanderson a chance to redeem himself, by having either Galad or Morgase or even Berelain, Tuon, or Perrin reflect back on their reunion.

OR, okay, so maybe a reunion of Morgase and all her kiddies...

Elayne, you're pregnant?!? You're pregnant by whom?!?
Mother, you were compulsed by a Forsaken? Me too!
Mother, you're dating who now?
Galad, are you serious?
Gawyn, are you nuts?