How does one "break-up" individual universities? What metrics should be allowable for admissions? (I suggest making legacy admissions and favoring race-/gender

How does one "break-up" individual universities? What metrics should be allowable for admissions? (I suggest making legacy admissions and favoring race-/gender-/etc. attributes illegal.) Why not get bright minority and poor students, and girls for STEM, supported with mentoring, admissions coaching, resources/funding, and other assistance that makes a massive impact? This way, admissions standards can, and should, be minimized to merit, rather furthering victimhood or privilege. It's like: If we throw away the SATs, ACTs, and other rank-able tests, what's left to compare students? Essays?