When I was a university undergraduate, one of our ULAS QFIs was an ex-Cranwellian, who'd been on one of the last Provost / Vampire courses. He and his course colleagues had been rather disparaging about the lowly JP3 when it arrived for the first of the College's 'straight through jet' basic flying training courses in 1961.
I was lucky enough to have been on one of the last of the traditional 'common core' JP3/5 courses in 1974 before the course was changed and the 'Group 1 Phase 1' thing started in 1975. Everyone, whether destined for Harriers, Vulcans or Wessex did exactly the same 125/140 hour course, with only UAS graduates doing the shorter course.
No doubt it was an expensive way to train, but it achieved excellence and was also great fun!