Yes the 3M line has been great, but it doesn't matter if the other lines can't contribute. Help them get the other guys going and then go back to it if you want.
The "3rd" and 4th lines are fine.
Monahan was playing well with Versteeg and I liked the Bennett/Gaudreau tandem.
I don't want Tkachuk with Monahan, I don't think they fit.
With the amount of talent on this team, it's amazing how offensively challenged they are. The only time they ever look dangerous is on the PP. Unfortunately the Sharks apparently play infraction-free hockey according to the refs.