Great! Now all Martin has to do is figure out how to get out of the mess he's been stuck in for two books already and we can just coast to the finish line!
In a hypothetical world in which Martin didn't make the initial aging mistakes and his five year jump problem wasn't incurred, maybe this is possible. In reality, he'll never live to see his series finished and I'm convinced he's not even sure how to get to from the current point to the end even if that was possible. He is stuck in a mess of his own making. Do I think he could make a more rich and rewarding ending? Absolutely. But HIS problem may not even allow him to get that far.