i'd love to agree, GKM...but i can't
alot of die hard, true-blue fans have noticed a discernable drop in voice quality for some time now: the real damage was done after he stopped touring, after the BTTE era...when he just did not utilize/exercise the vocal chords in a manner that needs to be done to keep them in best, 2-3 hour concert-style shape.
there was muy discussion about the sad shape of his voice at the start of the FITD tour...and he's never fully recovered from that laxness. if you don't fully exercise the muscle..it relaxes too much and will never be the same again.
as well...he just took off some bit of time a year or two ago to do just as you've suggested and the return voice, while not bad, is not all that much better.
it is age, not fickle fans, that is his biggest barrier now...and not much is going to change that, i'm afraid
...just another higher reachin' hillman !