Not wanting McMichael and Sprong on the ice at various points in the game I can understand, and Oshie's minutes shouldn't be hurt by putting him on rookie-sitter duties. Equally, swapping out Vrana in Vrana-Backstrom-Oshie for someone more defensively reliable, I can get.
But Mantha was touted as more of a reliable, two-way forward who has good possession game and would fit Lavi's system. Why would you ever sit Mantha to get Sheary more shifts if that were the case? It's not as though Sheary is an offensive juggernaut they can't justify leaving on the bench, nor a Hagelin or Down-like shutdown forward.
I'm just a bit disappointed that Mantha has gone from averaging 17:45 in his 14 RS games with the caps last year to less than 15 minutes so far this year. Mantha's 27 – he's already in his prime – and for what we gave up to acquire him (and his cap hit), he needs to play like a legit top-6 forward. 2 of 12 forward positions are currently occupied by CMM/Lappierre and Sprong – he shouldn't be short of ice time at this point in the season.