i think MDC is ok. doesn't lack talent or passion.
i would guess that he has followed the advice of L&T, and kept it simple, initially, honed his defensive game.
his skating was his weakness, IMO, and that has improved quite a bit. his energy has always been there , but now he seems to be more engaged, less intimidated. more confident. seems to be getting his shot off better, as well.
i think most of the fan-based disappointment, is more about the expectation that came with being a 5th overall.
he is fine in his current role, and my only concern is his lack of experience. but.... as we progress a little further every year, that will grow.