I realize Smart is not an efficient scorer. What Marcus needs to do is better recognize his best percentage shots. Shooting the open 3 may not be included in his best percentage shots. In time...I feel he will find himself on the scoring end of the game, using fall-aways in the paint, floaters, or simply finding the open man under the basket.
If any of the players you've listed even dreamed they could demonstrate the intangibles of Smart, (including in the playoffs mind you), they'd call and apologize to him.