WHile I don't agree with everything Oklahoma has done, I do believe that's the best way to build a team. Through the draft and with patience, allowing your young players to develop so they all are peaking at the same time. As long as they keep their core, they'll be a contender for the next decade.
I'm not against trading for good, young players, but when the team knows what it needs to reach the next level, and not to simply hurry things up. GOing back to Oklahoma, they resisted going out and getting veterans who would give them a few more wins until they were ready and knew what they needed.
Obviously Oklahoma has Durant, but they drafted him, and that's what Toronto needs to try and do. It requires patience the long term prospects are much brighter.