Excellent post.
My guess is that Duke will retain Scheyer for as long as K believes he belongs there. Considering the number of final fours K went to before winning it all, it is likely that Scheyer will quite a bit of rope, but as his teams are very similar to Squid at Kentucky, there can always be a veteran team (that may have fewer stars) capable of knocking them off.
I don’t doubt that Scheyer has a very good basketball mind. I'll wager heavily that there are hundreds of coaches roughly his age at lower levels who also have very good basketball minds. Whether he can close the deal at some point remains to be seen as in reality there are very few capable of doing it (it is nowhere near as easy as we've been making it look).
One thing that has been lost from Sunday's game was that there were four or five earlier critical situations where we did not do what was needed (a rushed three by Mullins after a turnover in a situation where a score would have made the pressure on Duke unbearable, a miss on the first of two free throws twice, by very dependable free throw shooters). If we had at those points we well could have been in the lead with under a minute left with Duke scrambling to score to tie or take the lead.
It came down to coaching, mindset, toughness and will. Over the final six minutes Duke's approach was basically hoping the clock ran out beore we caught them. That's where the game was lost.