Not that I’m aware of. We did have some folks propose creating an MIT Admissions specific math test, sort of like the math diagnostic used to place students into appropriate first year coursework. When we pointed out that this would be more accurate, but also way more regressive (because who would have the time and resources to study for the unique MIT math test?), we returned to the SAT/ACT.
This is also why we went blind on the subject tests in 2020, btw, a decision we made before Covid: what they added at the margin in predictive utility was not worth their exclusive impact, in terms of how few students were taking the subject tests.