I think Hedi could be a very interesting alternative to Karl. Karl's best work for the house always tended to be his more minimal productions...pristine white sets, blinding light, etc.
And I think that's what Chanel is in desperate need of currently. I don't think the house can suffer through many more of these monstrous collections that are really nothing more than gimmicks that should never have been materialized, and they only were materialized because..."he's Karl."
Hedi, I believe, could strip the house bare...no more baubles, no more sequins, no more glitz, not more...faux fur. Whittle it all down to the essentials and really bring the house back to its original message: simple, comfortable clothes for an entirely contemporary woman. Somehow Coco made that creed startlingly revolutionary, and I believe Hedi could similarly bring about some very prolific changes to this legendary, albeit slightly damaged, house.