Aren't we already doing that to celebrities? Although we don't call it as token but fame, the more they are famous then the more they are going to get paid for their works, kind of like how a painter is paid. It is a good idea but with the current social climate, I don't think that blatantly putting a price tag on a celebrity is a good thing because of all the snowflakes that is on the Internet. Better yet if we just tax this kind of people higher than those in the working class.
there are ratings and Qscores and other metrics. where the director pays the actor a income. to be in the directors movie..
but this is another income stream for the actor outside of the income per role. based on his fanbase and success.
where his fans can be involved. and the fans can feel like they own a part of their celeb
other things you economic people can play with is things like:
forget the 500m token limit. instead have a movie of 1:20:35 (4835 seconds)
where the movie creates:
21,750,000 luke hemsporth tokens
hemsworth: 45% of movie(36:15(2175secs)) =10000 tokens per second screentime
where if a actor has only done say 10 movies with average screen time. there may only be ~220m tokens to their name
ill leave you economic people to thrash out different things.