From the ESPN power rankings:
the Sixers, who are now 37-141 in the Hinkie Era, having suited up 49 players in those two-plus seasons.
More than anything else, this might be the biggest reason for their continued struggles, and the surest sign that management is 0% interested in building a team that can compete in the present.
Talent matters most in the NBA, but if you give a decent coach time to build up a group of players, no matter how overmatched they might be against most opponents, that team will find a way to win some games. The Sixers have had a revolving door at most every spot in their rotation, though, and that's why they're every bit as bad today as they were a few years ago when they began this tanking journey.
The Sixers aren't just intent on tanking to get top talent -- they're also completely uninterested in developing a cast of role players that actually knows how to play together. As soon as a guy develops some kind of value, the Sixers look into trading him. The problem, of course, is that none of these guys ever gets comfortable, and the coach must feel like any attempt to actually coach this team is more or less futile.
It really makes things tougher for the star prospects they bring in, too, because they don't have a support system of role players who know how to run an actual offensive or defensive system. The Sixers aren't equipped to cover their best players' weaknesses and enhance their best players' strengths. That's why Jahlil Okafor looks like a complete disaster on defense and Nerlens Noel is can't do much better than 40% from the field.