I wouldn't be angry if we dropped and drafted Marshall. Like you said, he's a pure point guard and has a special passing ability.
Marshall can't shoot or get to the rim and has to pass the ball before the defence sets up. Why would a defence even bother to cover him? He passes the ball immediately because it's a hot potato with diminishing returns in his hands. With so few skills his options are limited! Not very impressed with passing point guards that can't shoot and have loads of talent around them to help make them look like they are making the right decisions. That said, he must have a high b-ball IQ because he usually gets the hot potato into the right hands.