For various reasons, anything short of a formal match program (such as a common offer date) leaves sponsors and fellowships program vulnerable to anti-trust lawsuits. Therefore, a common offer date will not work. It either has to be a full match program like Derm does for Mohs' sugery of ENT does for facial plastics, or nothing at all.
Resident leaders from the AAPM&R and AAP RPC's, in conjunction with AAPM&R staff and Board liaisons, have been working on various feasibility issues. At the end of the day, residents need to have a very clear idea of what they want in the fellowship matching process. The current discussions have focused exclusively on PM&R-based programs because those contacts are within our specialty's reach. I don't think anyone has formally approached individuals in the anesthesia world about this issue.
If any readers know of individuals in the Anesthesia RRC or other active or influential individuals who might be interested in this please let me know.