Yes.
I suspect the 2016-17 Sixers will be a 35-40 win team nipping at the back end of the Eastern Conference playoffs.
No one has made it into the playoffs with 35 wins since 94-95 when there were only 27 teams in the NBA. A bigger problem is I don't see Hinkie not tanking next year. He's certainly tanking this year given his draft and free agent moves, has one player of any value who has NBA experience, and he's at the same position as this year's pick who should be a good player, if not transcendent. Even if Hinkie turns on the switch, it would take a lot of favorable events for them to get to the playoffs, including a young team gelling and winning more than 35 games. Worse, I don't see the talent there yet, and I don't think Hinkie does either.
Playoff contention doesn't necessarily mean in the playoffs, but they'll be fighting for the 8th seed. 40 wins was a game back of the 6 seed this past year. It's pretty condensed back there.
As far as this huge required improvement, I just think it's nonsense. They played at about a 25 win pace in the spurt post ASB, with a much improved point differential. They're clearly a significantly better team than they were to start last year, and still pretty clearly better than they were pre-ASB.
They'll be a 25-30 win team this year and those types of teams make pretty frequent jumps into the playoffs when they're built around young players.
You're really overrating the difficulty of maiking the playoffs in the East.