Bookworm,
Most of the 'negotiation' was done in the EASA medical group (NAAs and 'industry' experts) in Cologne before the Part Med Opinion went to comitology. Certain people you know well prepared a detailed case for the LAPL medical, covering inter alia the 'assessment' vs 'examination' issue, as well as periodicity for revalidation, empirical risk evidence etc. Much lobbying was done - and is still ongoing - but Sally Evans and the team at UK DfT stood their ground in comitology, I am reliably informed. Full marks to them, and I have said as much to their bosses.
Yes, the Part Med output from the written procedure is still awaited. Fingers crossed, then it goes to the Transport Committee of the Parliament later this year. But their only option under EU Lisbon Treaty rules is to accept all the text (covering all licences and related medicals) or reject all the text. They are not going to do that (reject).
The detailed AMC and GM material, covering detailed standards, is still being worked on, with key input from UK CAA using NPPL experience.