I've never really liked the idea of the Tour Championship. 30 players is too small a field, in my opinion. I'd eliminate the Tour Championship, play the first three Playoff weeks as scheduled, then take a week off and begin the Quest for the Card series, which would give the top-tier players a week off before the final event of the year, the PGA Championship.
Yes, I think that Glory's Last Shot should finally earn its nickname. It would do this by crowning not only the champion of the PGA, but also the champion of the PGA Tour. And ideally, one would hope to see a PGA Championship Sunday duel between two top players, where they are playing not only for the Wanamaker trophy, but also the FedEx Cup. The PGA would have to be moved about 5 weeks later, but I don't see much problem with that.
I've always thought that the season should end with a major, rather than a facsimile of such.