Back in 2nd edition, instead of going to the crown of command the player went through timescape. This allowed players a chance to get to the firelands before the player beat the lord of darkness. Characters like the Ogre Chieftan, and Necromancer have a huge advantage since they can really boost thier attack values.
I would like to have an alternative since timescape is likely never going to appear in 4th edition. because I do like a LONG game of Talisman. And it seems rather anticlimatic to soundly defeat the lord of darkness and win them game.
Is moving from the treasure chamber to the crown of command a bit too much? You wouldn't even need a talisman.