Interesting question...
I think when it comes down to ECs, ADCOMs need to take a step back and see what's going on. If the medical schools have a goal of creating empathetic doctors that want to serve the poor, then the applicants with the most killer/beefy/any other SDN-derived adjective for ECs will have a paradoxical effect.
Therefore, the applicant I call "ZERO to Mother Teresa" who goes from never gaving volunteered to suddenly looking like the next Mother Teresa once they are pre-med will likely not give medical schools what they want. In my opinion, the students with the laundry-list of ECs, high 30s MCAT, research, and 3.5+ GPA will wow the ADCOMs from top institutions and get admitted. But instead of fulfilling their promise of helping the underserved and all that stuff, they will gun for ROADS residencies and become our future dermatologists, radiologists, orthopods, and other specialties.
As you can see, the MCAT was redone so that we can have "better" medical students that will make more empathetic physicians. Maybe ADCOMs should instead take a step back and see why they are rejecting certain applicants. If we were to treat pre-meds as human beings instead of holier-than-thou God-like beings, we might have more desirable physicians.
The question is so simple, but it's quite complicated when you go beneath the surface.