From what I understand, there was a decision to take out Head Coaches for player-run teams to streamline the game. While I'm really liking the potential of FHM ( it looks like it's going to be exactly what I hoped it would) I've got to say, not allowing us to hire Head Coaches is weak.
Playing as a GM only, it feels weird and wrong to leave all the coaching decisions to an assistant coach. Choosing the right coach should be a big part of running your team, as should being able to fire him if things aren't working out.
Please, please re-consider allowing Head Coaches for player-run teams