Proper depth on the blueline, and hopefully some bigger margins of victory, should help put Hughes minutes back down to just under 25 minutes a game like last year.
People can argue he should play less, but when you have the best dman in the league, especially one that skates as well as Quinn, those kinds of minutes are completely normal. Scott Niedermayer was playing 25-27 minutes a night in his prime in Anaheim, and they went up to 27-30 minutes in the playoffs. Same deal with other elite dmen like Lidstrom, Pronger, etc.
Best thing the Canucks can do is make those minutes easier by getting some forwards who can drive play, so he isn't on his own out there half the time.