We'll see as the main guys he's developed on the NHL roster are Roy, RHP, Ylonen, Barron.
Hard to say what kind of impact he has had on the kids that only played a handful of games. Reinbacher played just 11 games, Struble 13 this year in Laval, Xhekaj 17 games.
He did 100% what you would want to see in the case of Mailloux and Barron, giving them high TOI and PP time. I wish the media would have asked Hughes how to they handle situations like Barron, how do they prioritize development when you have 2 players of the same mold/skill but only 1 spot. So when Barron got sent down I liked that he didn't move Mailloux off the 1st PP unit in place of Barron since Mailloux was at the time getting the job done after he was moved up a 2 months or so into the season to PP1 from PP2. Since Barron had shown he could produce in the NHL, I thought he would bump him but he didn't. I wondered if that was managements call or his.
Which shows there's so much we as fans just can't know that goes on behind the scenes as to who is making what calls and when, how, etc..
That said when you saw PP1 struggling, he did nothing about it and that to me is very troubling, when you can't come up with answers is not what I want to see. He moved Farrell up to PP1 for 1 game and then had him back on PP2 when Farrell had been one of the only players creating offense moving the puck since he returned from injury.