i've already posted in the previous thread about how i think this is the correct choice if you have to choose a captain
but thinking it over, here's my completely uninformed take: either they rushed into naming quinn captain because FAQ wanted to sell some new jerseys, or there is a good reason for this. following door number two, i'm guessing tocchet and the rest of the coaching staff saw this as a necessary move and didn't think there was anything to be gained by waiting a year or two to make sure quinn was really really really ready.
and the reason, i'm guessing, is it's time for the best players on the team to take ownership of the team. horvat's gone, and either you're going to continue to have JTM and some of the other older guys like myers and pearson if he's still around holding court, or at least pulling the team's momentum away from quinn/petey/demko, or you hand it over to quinn and let those three take over with everyone understanding that this is the direction the coaching staff and management is backing.
this doesn't mean that JTM stops talking or isn't a part of the leadership group, it means there's a chain of command and quinn can tell him to stfu when he has to without a fistfight. which ultimately is also maximizing JTM's ability to influence the team in a good way.
but to follow an earlier post in an earlier thread by me, this reminds me of choosing young sakic as captain of the nordiques. this is going to unlock something in hughes that not everyone can see yet. i think he's going to level up even higher this year and finish the season as a norris finalist.