I think the community feature that was announced by Steemit Inc for Q3 to come will be the perfect environment for ideas like that. There we will be able to bundle like-minded people and groups of interest - thus also create also real service communties. I don't think that you need a coordinator then. You can handle it like I did, running a pitch asking people to publish their ideas and then select your favourite one and pay for it. It's like a market inside the eco-system.
And yes, you should definitely consider asking for help in this community whenever you need some :-)