Is there a list of demands and laws anywhere they want to impose?

There is only this: https://kickstarterunited.org/

Not a word about the standards of performance or expectations from employees who would want to be part of union. A short list of some fairly handwavy statements and a one-page website "join-join-join".

Also what kind of positions do people who pushed this occupied? How many engineers have signed this?

Are they actually technical workers or ex political studies majors, who lucked out to get a job at Kickstarter and not Starbucks.