Not much to criticize about this team personally. It's a 16-team league so teams shouldn't really be that stacked but your starting roster has some good upside. You have a lot of high shot total players like Kovalchuk, Brown, Semin, Pavelski, Byfuglien...your guys get some decent PIM..almost all of your guys are gonna get some great PP minutes, even Mueller coming off your bench as I believe the Panthers are planning for him to play on the point on the powerplay.
Cs are stacked, LWs are stacked. RWs are less so but for a 16 team league, still pretty solid. I'd say the only area of weakness would be a third goalie but for a 16 team league, again having two solid tenders like Schneider and Hiller (especially with his off night starts) are solid.
I guess the only thing I could say is that considering you traded your picks away, you're probably gonna want to address your future at some point. But for now go for the win and enjoy the championship.