You should check out Steve Blank's talks on customer development.

In his latest talk at Stanford (http://cli.gs/JUh0Ne) a class member asked whether or not they should do surveys to understand the market...he said no. You should be testing whether or not your customer would buy your product following your current spec/idea not just general features they'd like.

You seem to be looking for people to formulate the product itself without clearly stating the core offering. That should be something you do inhouse then go out and see whether or not the market agrees that your idea has any ground to it - then reiterate.