I think Priority Track for Duke will ultimately prove to be a bad idea because
1) Priority track will make Duke rather than G-Town the safety for T-14 applicants and most accepted PT will not matriculate.
2) Everyone else is forced to wait longer. Waiting makes people not like schools.
My prediction is that Duke will need to draw heavily from its waitlist this year and its medians for matriculated students might fall, especially since Duke is supposedly averaging LSAT scores while other peer institutions such as Michigan, Northwestern and Cornell are taking the higher score.