Multiple authors in a single post [Suggestion to devs]

It would be nice if you could include multiple authors in the same article, for example, imagine I write an article in Spanish and someone wants to translate it into english.
It would be fair that I could earn a percentage of their earnings, so when someone reads his post in english he earn for his work at translating and I earn for my original content.

I would also like to choose the percentage freely (not all authors earn the same).

It would also help people to post research articles made by groups of individuals and reward all of them instead of just the post owner.