I doubt that the lack of pitch refinement is an issue. In fact, too much refinement may be an obstacle. (Beginning song writers often pitch songs with recordings that are overly produced. This makes it hard for the artist to see how she'd do the song.)

Unless, of course, you're just looking for contract programmers. They'll do exactly what you want, but they want cash.

It's important to realize that if most of the payoff that you're offering is equity, folks expect to contribute as well. If you want to pay folks like founders, you have to treat them like founders. If you want to treat folks like employees, you have to pay them like employees.