One thought I had on the difference between the 2020 draft with Gase and the 2021 draft with Saleh is that it could simply be that Saleh has done a much better job than Gase articulating and being clear and concise with Douglas and his team on their exact scheme and the types of players, their attributes and skills necessary for each player/position within his scheme to be successful. Douglas and his team may have been able to approach scouting last draft with much greater clarity and focus.
Also as with any job, experience and learning from your mistakes (2020 draft) can also play a role as well.
Let's hope the 2021 draft is more of what we should expect moving forward from Douglas. I'm keeping faith. There is a different feel to this regime than in the past.