I feel like I am at the stage of creating an "MVP for a social movement". i.e. trying to work out if this is something that people want, if this is a topic people care about.

Presumably if I am alone in my passion for the subject then no-one will ever comment/reply/email/express their agreement.

If however lots of people start to agree, to put their hands up and say they feel the same, then I can take a next step which is I'm guessing to do what you say which is to define a call to action - but what would that be, can you suggest?