With Smart it has never been about if he starts or is the 6th man. He is a 30+mpg player who you want on the court in crunch time.
With time I have come to like the idea of Smart as the starting PG, with Brown, Tatum , a big wing (Barnes) and a center (Theis). Then have a scoring PG (PP looks like he could be that guy). With Smart as the starting PG the team because so switchable that teams will really struggle to exploit mismatches come playoff time