This above is good. Was thinking about such things for academic publishing as well. Check out the last part of my post from a week ago, the channel update one for my subscribers. It describes a way to generate group specific tokens without further encryption / decryption and that can be used to give delegation within a group and by exchange rates between such subtokens for better or worse groups convert to tokens usable in other groups.

This can boost new accounts producing good content. Combined with some sort of second price auction mechanism for delegation this might do the trick.