I hope they dont rework draven because

Could you not give the narrative ideas mate?

Oh, I have no doubt in my heart that they're eventually going to get to Draven, make him a sadistic psychopath who delights in the screams of the innocent who never cracks a joke, and give him a 20 word lore entry over how much of a badass he is because he kills red shirts. But since his gameplay as of now is more or less balanced, he should be safe.... for now.

I can't see them do much other than removing "-and joined the League" from his bio, which isn't essential to his character in any way. He has a decent foundation, they could pretty much continue his story whenever.