I've used this technique over 3 semesters so far, with a total of 500 students. My team is myself, a TA, and 10-15 undergraduate graders. I try to triage grading with automated tests and a bunch of tools to give me an overview of how students are doing their work (looking at the first and last commit, commit frequency, etc.). The most work is in assessing the oral assignments, but I actually like doing those the most - I get to hear from my students in their own voice, which is nice during this isolated pandemic.

I think it could possibly scale to larger classes as long as the grading team scales with it. I'm not sure how public universities handle their grader allocations.