Dubas' drafting since 2018 can't really be declared a success at this point because most of the drafted players have yet to even graduate to full time AHL duties, let alone demonstrate NHL viability to any meaningful degree. A success is really declared based on WJC performances or name recognition or favorable prospect write ups because we've seen prospects from previous regimes get to this level of development and even further, yet didn't become NHL players.
To date we've gotten 43 games of NHL service out of Robertson and Sandin out of the 2018, 2019 and 2020 drafts. It's just too early.