OP, there is a big difference between 10 ppg and 15 ppg too. I leaned towards the 15 ppg. It also depends on the pieces surrounding. It's difficult to get others involved scoring on that many assists consistently if they can't convert on passes because a lack of true scoring or shooting talent. If individual scoring is needed, which is after all is a premium ability in the league option 1 is the way to go. Like say the Chicago Bulls teams. Not many creative individual scorers outside of Derrick Rose. At some point, those guys go cold. So it really depends. But pure PG? Option 2 is way to go.
Depends on his teammates. You want a PG that can get his own shot if he needs to, and he needs to be able to hit the 3.. however you want passing and distributing to be the first priority. He needs to be able to score to open up the other aspects of the game, but not the main priority. Unless it's a team that's really weak on scoring, but those usually aren't good teams.