What feedback did you get from MCW? Sure, a higher MCAT score will help, and if their admissions team told you to retake the test, I would definitely do it. As an athlete, you hopefully had a lot of academic support to keep your eligibility, but I'm sure they don't help you with test prep. Did you use your university's prehealth advising office or resources? (Did you read the article and watch the video I posted above?)
I think you (and many applicants) overestimate how strong your ECs are. Based on your WAMC profile, my hunch is that your 100 hours of volunteering could use a boost. Doing it outside the safety net of your status as an athlete (since you have graduated) should help you gain more credibility in caring for your community's health needs. Food distribution, shelter volunteer, job/tax preparation, legal support, transportation services, or housing rehabilitation: I saw no mention of such activities, and you should have 150 hours minimum by submission or your file could be screened out. I think had you had 150+ hours, you could have had a better shot for an offer. If your undergrad had a reputation for strong community service impact, I would want to see some of that rub off on your profile, especially once you graduated.