I think Osh's greatest strength in the past was his loyalty, trust, and belief in his players. It works great when you have a ton of very talented players.
Now , when our talent is somewhat depleted, it has been his greatest weakness. Last year's Cup game was a real eye opener for me. If you can't let your backup take over when it's blatantly obvious your starter can't throw then you should have been looking for a competant #2.way, way earlier.