Overall as far as I understand,I have to admit that Mushy is not a good tactitian. But he is a good leader. A good leader quickly accomodates lackings as per need. May be Mushy is a bit slow in learning but I have faith on him. He will improve his tactical skills as he have improved his batting and keeping. Under him team is doing really well and stats are with him.
We need to remember that to lead a team like Bangladesh is really tough job.