"but it would be a pdf mag delivered by email"
Funny you should say that, I have always thought that would be a very good idea for a GA mag.
PPL IR do exactly this and it is a very good read, albeit catering for a very specialist sector of the GA community. I think GA in general needs someting similiar.
"US 'Flying', I don't read it often but that's because my impression is it caters for the 'turbcharged IFR' sector"
As you say, you obviously dont read it very often.