In other words, is there a forum or service where you can list high level requirements, list frameworks/libraries/technologies you plan to use, and have people

In other words, is there a forum or service where you can list high level requirements, list frameworks/libraries/technologies you plan to use, and have people critique that or suggest alternatives. And in case it wasn't clear, I'm absolutely fine with this being a commercial service, whether it's an individual freelance or more crowdish like 99designs.