The premise could probably spawn another novel, but I've had this going around in my head for a while:

What if Raistlin and Dalamar had seperated after Enigma, and only met again after Raistlin has become Master of the Tower and Dalamar is assigned the task of spying on him? What would be different if they had seperated (however unlikely that is) some months later, e.g. after Ice and Steel?