One person told me the push for automatic advancement was to negate the squadron practice of E-3 and below reporting to 1st LT for 90 days.
Not necessarily to negate it, but to keep the AW's/Aircrewmen from having to do it. In my day it was the CO's that said the AW's/Aircrewmen were exempt from 1st LT duty. The idea was we were more effective to the squadron's mission while in the airplane than cleaning shitters.
So taking into account the discussion in the "Jets vs. Helos" thread (http://www.airwarriors.com/forum/showthread.php?t=140890&page=4) about the differences between the LAMPS MK I and LAMPS MK III communities, I am not surprised the AW shops needed something to keep the new kids where they belonged, in the airplane.