He's taken himself out the last half dozen games at least...no longer the Top defensive centre, that's actually been Evans lately closely followed by Suzuki who's D-game is growing by the day...I'd take Bennett on the 3rd line right now over Danault...
I still believe in Danault, you do not lose all your defensive game in a few months. I believe the issue is that he saw himself as a top line center whereas he is not and that was highlighted by Suzuki and KK playing better. I would actually mix things up, Danault on the third line with Toffoli and Lekhonen, Evans with Byron and Armia, KK with Tatar and Gallagher (but as mentioned on another post with KK playing in the center not next to the boards like he does now).
The way I see it is that you want complementary players on each lines : and MTL only has one line which complements itself (Drouin Suzuki Anderson), the others are the slow line (Toffoli, KK, Perry/Armia) with three players playing close to the net, the shutdown line (Tatar Danault Gallagher), which needs a center with better offensive instincts to make the bridge between Tatar and Gallagher on possession plays, the quick and skinny line (Evans Lekhonen, Byron), which has speed but sometimes lack a big body in the corners. Regarding defense I have already made my point : Chiarot + Weber = very bad idea