No one interested by a Hardcore-mod ?
Like No lords invincible. They can died on the battlefield. The player too.
Begin like a widlings : Night's Watch men's pursued you.
Quest like : Assasinate *Lords,Queen,King*, Kidnapping a Lady
Religion : R'hllor, The Sevens, Old Gods...
Fake alliances : The player is a vassal of Stannis, but he received a message from Tywin Lannister. "Join me blablabla 30 000Gold. Or I will crush you." the players follow Stannis army and once on the battlefied attack Stannis and retreat.
Oooh and... 12 crash in 3 hours