I've considered it, and once I have a little more structure I'm planning on introducing the idea to various BCOP groups (including RIPE) but first and foremost I don't want this effort to be a BCOP that is filed away in long technical prose.
I see this project more of a document to be handed out by IXPs to new members on how to use prefix filtering. It should be a document with pretty pictures and plenty of worked examples for various platforms, and ideally with a couple of additional deliverables:
* A slide deck for people to pick up and present at conferences.
* If possible, a 5 minute video on how to do it and why -- not a screencast but a flashy video that catches attention.
I absolutely don't want another dry, boring document like
http://nabcop.org/index.php/EBGP_Configuration_BCOP_v0.1 -- it should not be comprehensive, it should concentrate on the key points only and make the work required as low effort/risk as possible. In my experience, BCOPs tend to be overly bogged down in minutiae and only provide examples in IOS style configuration syntax.
I'd appreciate feedback.
Matthew