Actually we can provide a space for hosting of licenses texts on our website.
Texts will be not editable, every license variant will be a version of a base license and source/author mentioned.
License author should be agree that this text will be exposed publicly and can be used as any kind of copy or as a link by anybody.
I think this service can be completely free, but if you, photostockers, are interested, please contribute your texts.
Clearly, these should not be copies of licenses texts from existing entities. If they provide confirmation for publication and linking and usage permission, then no problem.