Comeback in terms of mainstream? I think that ship has sailed for all 3 of them.
We're are gonna start judging albums differently (if we havnt already) by the way it affects the public due to the internet. Its a completely diff game than what it was in 2005. Fair or not. Personally, Im already over the "sales" thing cause they dont count them the same on top of the majority of the sales dont come from real "Hip Hoppers".