@Andar I agree with you, and I like your tip. It’s hard to find such people.
Also, considering specialisations, it may be hard to find people who would be passionate to contribute via their specialisation alone, since they would want to have input on the project as a whole and that can make it muddy.
@ImaginaryVillain Ok, so all we need is $1 and a door, I pay you, you leave, then you come back, pay me, I leave, ad infinitum.
Jokes aside, having worked in many group projects and being the person who does most of the work, carrying some lazy luggage along for the ride, I see why you’d do that.
My strategy is mainly that I do as much work as I am interested to do myself, and then at a later time, having defined where a puzzle piece should go, such as art or sound, I will hire freelancers to fill the gap. I think this will allow me to make the graphics and sounds go a longer way, by preplanning them.