Bowman brought in players like Andrew Shaw and Ryan Carpenter, he signed Robin Lehner to improve the goalie tandem, and he traded for Calvin de Haan and Olli Maatta to drastically change the defense.
Bowman made a lot of moves this offseason, so he did his part to improve the Blackhawks.
Bringing in depth players, defensive defensemen that can play in the top-4, and adding a Vezina Trophy caliber goaltender is one heck of an offseason.
Even so, something else needs to happen for the Blackhawks to succeed.