Serious question what more do you want Dubas to do that would be considered 'enough'? Even if he somehow got Chychrun, Meier and Kane on the team at the deadline and we were still playing the same way as we are now, you'd STILL probably say he 'didn't do enough'.

On the otherhand if post deadline the Leafs were dominating and winning every game, most people would probably be saying Dubas was a genius with all his moves.
I think Dubas has done a pretty good job of trying to address all the real or perceived weaknesses of the team and now its up to the players to perform and the coach to get the best out of them every game.