Well, unless I missed an email, I don't think I am doing anything with respect to Duke's rotation.
I am entirely focused on the starting lineup. The backups will sort themselves out. I am higher on Pat than you are because I feel he can handle the backup 5 role. The hurdle is lower for a backup 5 than pretty much any other position. If Pat was being considered for the starting 5, I would be significantly worried.
I do think there is larger chance that K2 and Evans get buried on the bench than you do, but I think it is unlikely. Jared and Caleb were the worst defenders on last year's team by a sizeable margin. I consider both more athletic than K2 and Evans. Freshman without a defensive reputation tend to stink on defense. A player who is a negative on the defensive end is the basketball equivalent of a DH. DH's can't be good offensive players, they have to be great. While K2 and Evans could be great offensive players, it is far from a slam dunk. (My sports metaphors are all over the place).
I think Duke has 10 players who, on paper, are capable of rotation minutes. Regardless of who starts and where they play, if Jon plays a typical Duke 7.5 man rotation, three people will be unhappy. I was holding out hope that Jon may extend the rotation but then he briefly mentioned on the recent TDD podcast how difficult it is to play 9 players. I am still, probably foolishly, hoping that Jon will extend the rotation.