Force Shaping town hall at my base today. Only real nugget I picked up was that the 1LT briefer said that you don't have to provide a justification for being released from your ADSC besides the required quote from the PSDM. She said that if you write more, it wouldn't make a difference at AFPC, but I have a feeling it might help you to get an approval from your CCs.
Regarding "slow rolling" your application, there is actually a statement in either the PSDM or the referenced regs that prohibits commanders from delaying an application. I can find it if anybody needs it.
She also said not to expect any more details about which airframes would be targeted in each AFSC. Again, this is a 1LT personnel officer at one particular base, so YMMV.