I think you have to look at the young teams at being bad once again. Philly, Phoenix, Lakers, Minny, Kings(especially if they trade DMC) are all going to be in the bottom 7-8 teams. Nets too. If Melo is hurt long term, the Knicks will be there and probably Denver as I see them continuing a youth movement by trading players like Gallo and Faried.
Then there is going to be a ton of teams in the mediocre area like the Pistons, Bulls, Pacers, Magic, Bucks, Wizards, Pelicans, Mavs, Jazz, and Rockets. I guess one of the mediocre teams could fall into the deep lottery and one of the teams I see there could move up, but I think these teams are what will make up the bottom half of the league next year.
I just don't see a lot of movement. I don't see any major difference making rookies pushing teams higher. I don't see any difference making free agents joining these bad teams and making them better, and I don't see the youth on these teams developing to the point where they make their team catapult up the standings by 10-15 games and getting out of these tiers of bad and mediocre teams.