I wouldn't want Smith on this team at any age. Stat stuffer (not in a good way), horrible teammate, historically bad shot selection, inefficient, uncoachable.
Robinson has some mental issues too. There's no reason a guy with his toughness and rebounding ability should bounce around the league like he has. In Philly, he posted a 30.2% defensive rebounding rate. That's obscenely high, DeAndre Jordan-level rebounding. (Horford was 18.6 last year)