Marcus Smart is this generations DJ
Great defense, good passing, great team player, offense fair until game is on the line
Intangibles
That is a great comp. Of course, Marcus has a long way to go to make this a career comp, but defensively he's already more intense and stronger, and offensively he has some of the traits that made DJ a great complimentary offensive player. DJ couldn't shoot the 3 (and therefore didn't), but he drove he ball well, had great BBIQ, and he was clutch. Marcus has shown evidence of a clutch gene, he has a decent handle and can see the court -- passes well if not sometimes a little out of control. Like DJ he is a good rebounder at guard and like DJ he is a "sort of" point guard. Neither are prototypical PGs -- more defensive minded combo guards with average (DJ) and below average (MS) shooting skills.
Larry Bird said DJ was the best player he played with. I don't think Marcus is destined for such praise by a legend, but I would bet that most guys he plays with are glad to hae him on the court with them -- though I also bet they cringe when the 3 flies.