1. I think people are underestimating the difference between successfully guarding SG/SF's and successfully guarding PG's.
Huge difference when you're focusing on preventing a player from scoring and when you're trying to prevent penetration without receiving help, in playing primarily side screen-roll and middle-screen-roll, in fighting through 1 ballscreen and fighting through constant screens (and if you're guarding a PG who can shoot you constantly have to fight over instead of go under and your size advantage actually becomes a hindrance).
2. Again - big difference between initiating the offense and running the offense. Stark contrast between a draw and kick or hitting the open man...and creating, probing the defense, knowing how to penetrate and draw the defense and then finding the right passing angle. Maybe I'm just old school but I think PG is a trait that's in your blood well before most players reach the NBA. Look at the difference in 09-10 between Ronnie Price and Eric Maynor, and now between Earl Watson and Jamaal Tinsley. It's a little like a quarterback, PG's who run your team effectively have to be game managers as well, and there have been so many cases of teams trying to play big backcourts with excellent SG's and SF's running the point - and unless you're running the triangle the majority of the time it doesn't work because you lose that cohesiveness that a natural PG brings to the table.
3. Next year we only have Hayward and Burks under contract on the wing. We'll definitely add some bodies but there's more than enough minutes there for the two of them.
I'm sure I'm in the minority on this, but just saying it's not like a video game where a SG can have a high rating in passing/ball-handling and thus play the point effectively. If it was that simple every team in the league would be playing their SG's and SF's at the point to gain an advantage. You see a few occassions where it happens but generally it's a major transition - especially for a 1st or 2nd year player.