I've only read the last 10 pages or so, but have you guys discussed C.J. McCollum?
I'm assuming you have since this thread is ~500 pages haha.
With that said, I really like him. I know he's not a pure PG, but he's a creator. Good shooter, good off the drive, athletic, nice wingspan, plays good defense. I can just picture a lineup of McCollum, Burks, Hayward, Favors and Kanter doing well. All of them run the floor well, McCollum, Burks, and Hayward can all handle the ball well, they can initiate the offense, they can create. With the right coach, that'd be an offense that'd be fun as hell to watch.
I'd also consider taking somebody like Kelly Olylnk (sp?) from Gonzaga. He's got nice size, can put the ball on the floor, has low-post moves and can also run the floor. He'd be a nice backup for when/if Jefferson and Millsap leave.