Spec,
Good to see such a detailed email from you in a long time! October visa bulletin with the accompanying pending I-485 inventory report will provide better insights into the next year. Even though EB2I remains static for now, there are lot of good things going on beneath the surface (significant reduction in porting going forward, new administration's efforts to curb immigration which will most likely show their impact next year, etc.). A good strong foundation is being built on from which EB2I cut-off dates will progress more reliably next years. The pace may be low, but gone are the old days of retrogression, back and forth, etc.