I think it's a year by year thing. This year the focus on depth was to fill many traditional positions like Corner and Safety and QB due to injuries, and Oline due to ineptitude. Without knowing for sure I would think this took precedence over ST abilities. That's not to say that Crossman is a good coach or a bad coach as he may prove to be as horrible as many are saying he is, but given what the staff decided (no change at that coaching spot), it gives him basically one more chance to prove it was the players (lack of ST talent) who ultimately failed.