Thanks for the feedback.
Unfortunately the ECF website doesn't really have any information. I get the impression that the Euroroute is far less establish than I first believed.
Pedaleur, thanks again for the reply.
I think you may be right about digging into the various countries national systems. Luckily (or actually, unfortunately) I still have 8 months or so to plan!
The security questions were more so about Latvia, lithuania, and Estonia. I have spent some time backpacking in poorer areas in the past (Bolivia, Nicaragua, Colombia, Peru, Oman..) so I understand the value of common sense.
Thanks again for the reply