FWIW, just received my acceptance package today.
Application received e-mail 11/17.
Status checker and complete 12/15.
Acceptance package dated and postmarked 12/28.
My status checker still reads just "Complete."
Numbers are at 75th, with strong softs including M.A. and 3+ years full time public interest work experience. Submitted generic diversity statement drawing together my work experience and interest in pursuing public interest law (am non-URM) but no Why Michigan. FWIW, I did submit an updated résumé on 11/24 and a fourth LoR on 12/13.
Good luck to everyone still waiting -- it's anybody's guess why some people get status checkers before others but if you put together a strong, well-rounded application, have faith!