DR
I have been trying to follow what's going on with Part M but as your post implies there have been so many different twists and turns with the various proposals it's hard to keep up with what's going on. Even if a concrete set of rules eventually emerges it presumably will be up to each of the 27 countries National authority to interpret them. I wonder how this will be policed? I really can't imagine some of the newest entries into the EU being so disciplined as the UK but then I omit to being a bit of a cynic. In the meanwhile I think there should be a bit of a moratorium in the UK until a firm specification is on the table and each country has signed up to it. This would save a lot time wasting and heartache within the light aircraft maintenance community.
I realise that you're only the messenger not the reason for this mess.
"What is the problem we're trying to fix", comes to mine!