In what ways do you think he may break out? What aspects of his game can he develop to become a big-time player? Given his play on D, I'm guessing this growth will come on the offensive end. Interested to hear what others think (not being facetious, more intrigued).
Growth will come on both sides of the ball. He's already a superior defender and was 11th among PG and SG combined in defensive box +/- as a rookie. More impressive was that he's tied for 23rd in defensive box +/- among rookie guards since 1973 who qualified on a minutes basis. A lot of good names on that link below. He's scores high on net box +/- and VORP too.
http://bkref.com/tiny/NaCyFAn easy area for improvement is FT shooting where he should be in the 75% range as he was in college instead of 65% last year. Taking fewer dumb shots should happen with age/experience as most players shooting improves. Smart also shot 9% worse from 0-3 feet than he did in his last year in college. It does not appear that being blocked at the rim in the NBA was the problem based on the calculation I did. Assuming the same blocked rate as in college applied to the actual shot distribution Smart had last year at the rim, from 2-point range, and 3-point ranges, Smart should have had more shots blocked last year.
IOW, it does not appear that NBA defensive athleticism was shutting him down. However, a leg/foot injury might well explain the difference. Supporting that thought Smart went to the rim at half the rate last year compared to his last year in college and drew fouls at a much lower rate. He had 8.1 FT attempts per game as a soph at OK State vs 1.9 per game last year. IOW about 4+ times as much in college.
Overall, I expect improvement in running the Pick-N-Roll going forward and in driving to the basket, which might well bring his total shooting % from a sub-par 49% last season into a very respectable 55% range as he achieved as a sophomore in college. That's a bigger than normal improvement over an NBA career, but I think there's a decent chance that he exceeds the normal improvement by a shot distribution that's more in line with what he did in college.