Allowing ''educational purposes only'' licenses?
I can say only one thing:
Liberum veto!
Why? Couse it's simple cheating thousands of authors, who has already published their work on CC-BY-SA or GFDL. I have made some images (schemes) and I released them as free content and now you try to say, that some time in the future I will be allowed to publish it as fully copyrighted except of free educational use ? No way!
If someone doesn't like our licenses he doesn't have to publish anything!!
Don't dig grave to OUR IDEAS in the name of collecting more materials!
AJF/WarX