[malor]

I've tried delegating as a solution and ended up with Pitching coaches with lower teach pitch ratings than the hitting coach had and the reverse was also true. Started using the editor at that time to solve the issue. Fired or reassigned a bunch of coaches and my minor league teams started to actually play better and win more games.

Don't trust the AI to do anything unless you are go along behind it to confirm it is doing what you think it should be doing. If you are happy with poor coaching and the resulting poor prospect development, than continue using the AI.