It will reflect well on Adam and MSL too, because they are proving they can develop a raw talent into a pro player. Slaf is basically the big test case of the habs management theory in modern professional player development.
I don't know if Slaf should have played elsewhere last year or not, but one thing I understood is the scepticism behind letting him develop in the NHL. That didn't came out of nowhere! This franchise has suffered enough of mismanagement of top prospect development for their fans to not screech when it is attempted again with a player as raw as Slaf was. That the coaching staff managed to turn this around isn't necessarily the outcome I expected last summer, although I tried to kept the faith. But they've done it. It seems to be working.
And lets not forget Slaf attitude, which look exemplar. The guy is putting the effort to become better, this is clear as day.
That being said, he still as a long way to go before becoming what he wants to become, so lets just hope he continue his progression.