It makes more sense to look at guys who were available at our pick - Randle is one, but then Stauskas has already been basically given away, Vonleh glued to the bench and traded away (to be fair, to acquire a better player), Payton a solid but flawed PG, McDermott unable to get time (to be fair, on a good team)...the list goes on and on, very few rooks picked after Smart have shown much promise so far.
How good Smart will be is very much up in the air, but so far he looks like a good pick given what was available at #6.