I would probably only send an updated resume if you get an interview invite (just because interviews ask about jobs a lot). Otherwise seems unnecessary
Not doing even an optional interview is a big red flag. Not sure how Washington works, but for instance if you don't do the "optional" Kira interview for Cornell, you aren't getting in. Based on your stats, there's a good chance this is for YP.
... entering class has done an interview. Also, I imagine that ... refusing to interview would make it seem like ... . Especially because the Northwestern interview is just a self-recording ... overthink it and accept the interview. The Kira platform lets ...