Good point. It is strictly 100% opinion and I very well could be wrong. But quick search of rationale in my head:
JV forte is the pick and roll as is Irving's.
C's are harder to come by than PF's.
I'm not sure how wise it is to have 2 undersized guards manning the backcourt who typically both need the ball to be effective.
I also should not have even mentioned Beal or MKG because they were gone when CLE picked last year.
TT and Waiters were both significant reaches in my opinion.

