Just sat with a bud yesterday who is on a 4-star staff, and he said that there is obviously a lot of interest in trying to solve the issue. They are looking at increasing production (FTUs), possibly doubling the bonus, giving in-res credit for guys that work in certain staff jobs (i.e. execs, CAGs, etc.), and API-coding guys to stay flying while on staff. Will likely be years before any of these have an effect.
As a nod to the retention issue, for the first time in recent history, they did not require a "7 day opt" for individuals that decline their school assignment (i.e. they can turn down school, and not be forced out of the Service). On another note, it was quite interesting to see a quick turn-around with the school announcement details; original announcement did not include "which" school an individual would attend...but did include a nice note from the AFPC/CC explaining this was an opportunity to exercise "Service Before Self." Evidently the 4-stars received some not-so-pleasant feedback pretty quickly, and in 4 days, the list was out again...with actual schools.