This has been considered from time to time, I gather. When ajamieson was a Moderator on the bmi board (which serves as the trains forum for the time being), he said that he had raised it with whatever is the central Flyertalk authority on these things. But once Railteam has properly established reciprocity in its members' frequent traveller schemes (ES, Thalys, SNCF among others), surely it would be right to ask again if a European-wide (including GB) rail frequent traveller board would not be helpful? After all Amtrak has one, and that cannot have a fraction of the members of the various European rail frequent traveller schemes.