I agree, he's definitely more of a combo guard than he is a true point guard. But that doesn't make any difference whatsoever. Most combo guards are also just as reliant as having the ball in their hands as point guards. Look at Derozan, Wade, Oladipo, Turner, etc. Virtually every combo guard is much more effective with the ball in their hands than working without the ball. On the other hand, the few true shooting guards, like Bradley, Thompson, Ray Allen, etc., are just as good, if not better, moving without the ball than having the ball in their hands.
Since when is Derozan a combo guard? I thought that he was a 2/3, not a 1/2.
Thus, it's silly to think that a combo guard wouldn't be held back by playing something around 90% of his time with one or more of the most ball-dominant players in the league on the floor with him.
Just for fun, I went back and looked over a portion of his games during his rookie year, and it surprised me that some of his best performances, in addition to his best game of his career to that point, actually came when both he and Turner were starting. I'm talking about his 25 point, 9 rebound, 5 assist, 2 steal, and 2 block masterpiece against Westbrook, btw, in which Turner had 10 assists, among other contributions. Check the box score if you don't believe me -
http://www.basketball-reference.com/boxscores/201503180OKC.htmlhttps://www.youtube.com/watch?v=yKkU5Z2z8Y0Or this game -
http://www.basketball-reference.com/boxscores/201504100CLE.htmlhttps://www.youtube.com/watch?v=2OZ_9YlX_yEMy favorite part of that broadcast ^ is when Scal says, "when Smart knocks down shots he's tough to guard."

#yearbookquote

There are other examples that I can reference, whether Smart started with Turner or was the primary ball handler for the second unit, but my point is that I'd be interested to know what Smart's splits in those situations were, because they might be quite similar, but we have no way of knowing this, obviously, without the statistical breakdown. Does anyone know of a way to find these numbers, if they exist?
I also think that though Rozier is also ball-dominant, he and Smart are a much better pairing together, because Rozier can still effectively play off the ball. His shot is good enough to make him a threat from the outside, and he's shown that he knows how to move off the ball to take advantage of help defenses and defensive miscues.
I think we'll really see a big jump from those two playing together this year on the second unit.
Maybe, about Rozier. He does certainly seem to have a better jumper than Turner, but he's nowhere near the distributor, imo. Dude's a black hole, lol

. In such a situation, then, when paired with Rozier, Smart takes Turner's role, I guess, but the problem with that is that he isn't the passer that Turner is, nor does he have the ability to create off the dribble and get to the basket like ET, unfortunately, imo

.
Obviously, we'll see what happens when the guys hit the court, but not replacing Turner with someone who possesses at least a similar skill set could really hurt us, imo.