It feels to me that the venn diagram between "students that fully engaged with the material" and "students that learned well from the material" is going to basically be a circle for any teaching method.
Do students not like Mastership techniques?
Also, mastery learning doesn't look all that effective on standardized tests: https://www.jstor.org/stable/1170613
I think we've all had a few teachers who seem able to teach 2-10x more effectively than normal; they all seem to do it in different ways. I read recently the Gates Foundation felt they'd found nothing statistically significant in their billion+ dollars of teaching philanthropy.
The most plausible education improvement proposal I'm aware of is individual tutoring. This truly does seem to work well, and I think it's why there's so much interest in agentic tutoring. Perhaps we need a TeachBench to get some hill climbing done by the frontier labs.