I didn't love the Mazi pick. I felt he was a possible trade back target, like move back 6-8 spots and pick up an extra 3rd type of deal (if the guys we liked at 26 were off the board).
I watch a lot of college football, and am a Michigan fan, so I did see his potential.
Something that spoke big to me was the playoff game with TCU. Mazi did have a forced fumble, but otherwise was pretty invisible. He was up against Steve Avila much of the game and Avila handled him on most plays.
I rememeber one play in particular where it was Avila V Mazi one on one on a pass play, and Avila had him pushed 3 yards past the LOS and was just digging in and kept playing, while Mazi had given up, so his motor was a question to me.
So while I did see his potential, I just didn't think he justified a 1st round pick.
All that being said, I was happy to see the organization sort of wake up and admit that IDL was a weakness and needed to be addressed. It seemed like they largely ignored the glaring weakness there for a long time.
Mazi is a piece of the puzzle. Very unlikely he is an Aaron Donald type who dominates, but he will provide a huge, strong body and help a lot. Having Hankins and Mazi is a great situation IMO. Hankins will start, and Mazi's snaps will likely increase as the season progresses and he gets his footing. This will help preserve Hankins too. As the season wears on, we will be much better at the position than we have been in the past. These types of players don't make a lot of plays, they free up others to make plays. Mazi will be a piece of the puzzle and help deepen the defense, and he does have that potential with his strength and quickness. Judging him now as a pick is foolish IMO.