An old use case (revisited)

Hello,

I pose quite a rethorical question.

As an exercise, I have checked an old use case, posted in the wiki here:
https://www.w3.org/community/odrl/wiki/Publishing_Embedded_and_Royalty_Free_%28RF%29_Assets
and whose description is reproduced and commented below. My comments are:
- the payment specification needs a vocabulary and it is transversal to 
every domain. Even the one provided by schema.org 
(http://schema.org/PriceSpecification) does not suffice.
- a more complex model on the asset (thumbnail, full resolution, demo 
version, etc.) is also transversal to many domains.

In the context of the W3C LD4LT group we have found some other generic 
needs when using ODRL to license linked data language resources.
How an ODRL user is expected to overcome these problems?

Víctor

    *2) Royalty-Free (RF) license for Commercial Uses of Media Assets*

    For commercial uses of the Media Assets, Audubon would like to offer
    Royalty Free (RF) reproduction rights. Potential customers may
    identify Audubon by his watermark, unique identifier. and/or
    clicking on the embedded Media Assets where Audubon’s Terms of
    Service are expressed. If a user wishes to buy a non-watermarked RF
    license to reproduce one of his photographs or videos for commercial
    purposes such as advertising, promotions or merchandising, Audubon
    will provide a non-watermarked media asset for download upon
    acceptance of his Terms of Service and payment.

      * Photographs: Download under RF Model --> odrl:reproduce
      * Royalty Free license to reproduce media asset (identifier) for
        editorial reproduction only. (odrl:purpose)
      * Licensor may not use media assets on Merchandise products such
        as postcards, calendars, posters, stationary items, paper
        products, mugs, photo or giclee prints, wallpaper, artwork, or
        apparel items.  --> a new subclass of odrl:use is needed
      * Client Copyright Notice or Creator Attribution required.-->
        odrl:attribute and cc:Notice should suffice
      * File size 1600 x 1200 pixels under standard RF terms. For larger
        file sizes or additional licenses contact Audubon direct. --> a
        more refined model for the asset is needed
      * Licensee to pay Licensor US$100 per photographic media asset -->
        odrl:compensate
      * Video: Play on Pay per click (CPM) under Streaming Model -->
        extensions are needed.
      * Licensee to pay Licensor US$2.00 CPM payable monthly-->
        extensions are needed.
      * Client Copyright Notice or Creator Attribution required -->
        odrl:attribute and cc:Notice should suffice