The biggest issue is that they haven't really drafted well since they got Adams.
He has been even worse.
That's not strictly true. They have given away a lot of recent draft picks which has Hurt, but a few years ago they were one game away from the D League Finals (Final D league season) featuring 3 thunder draft picks.
None of them played meaningful NBA minutes. Also the Last notable pick they made was Domantas Sabonis and he was 27th in BPM this season.
Talent development is just a joke there
Edit: Post Adams picks.
Alex Abrines, played meaningful minutes on a team one game away from the WCF. Had some personal issues which took him away from the team this year.
Mitch Mcgary
Got minutes his rookie season and was highly productive he was basically Kanter with passing ability. Year 2 he got shuffled out of the rotation, left to his own devices and as a known addict succumbed to his worst instincts.
Cameron Payne
Showed flashes his rookie year but basically sat for most of the first half of the season because Donovan wanted him to practice with the big club and then never played him. He looked good in the G league. Then he got hurt and hasn't been the same.
Year 2 he wasn't health and OKC had him in competition with Semaj Christian who was Awful. Another year of stunted development then traded to Chicago.
Domantis Sabonis
Is playing great for Indy
Terrance Ferguson.
Jury is still out. He barely touches the ball on offence, is part of a good team defense when others try, his body isn't fully NBA ready yet but he's looked solid this season.
That list reads more as developmental failure then draft failure to me
Edit:
NinjaScooter
Bad contracts are always tradeable if the player is serviceable because there are usually worse contracts.
There is too much uncertainty now with there being a lot of PGs available who are better then Schroeder. Once Kyrie, Kemba, Clonley, Lowry, Holiday and possibly Teague find new homes we will see where someone like Schroeder fits.