I've said this before on here... show me a run-stuffing NT you like, and I'll show you a guy who didn't put it together until at least year 3.
Vita Vea
Derrick Brown
Dexter Lawrence
Daron Payne
DJ Reader
Christian Wilkins
The most important thing with all of those guys is that they showed signs of life early on. They all started off playing OK, just not up to 1st round level expectations. Then somewhere around year 3 or 4, the NFL squats 'n' oats kicked in, and they start bulldozing guards again.
The biggest thing I want to see from Mazi is signs of life. Hold down some double teams, slip past some guards. It doesn't even have to be consistent, just show us that you have the potential do it.
If Mazi plays at a Hankins level this year, I'd call that a win and positive sign for his long-term trajectory. If he's a Taco type blocking dummy out there, that's when I would pull the alarm.