Melton is a good pick. It' tough to find such a handsome player at the 46th pick. Most years you only have unattractive or at best average-looking players left by the middle of the 2nd round.
It's extremely rare that you can draft a player in the NBA draft 2nd rd and feel he can contribute as a rookie. But this past draft was kind of deep and some players drop to the 2nd rd for some reason.