Good point... But I would counter your counter by saying that you identified late in the game that you were going to have a very hard time marketing the app du

Good point... But I would counter your counter by saying that you identified late in the game that you were going to have a very hard time marketing the app due to people's expectations. Poor marketing and inability to get users to bite kills plenty of decent ideas. Not recognizing that early on is as damning as building something that collapses when you try to scale it. I'm not saying your idea is a bad one. I'm just saying that getting criticism early on, even of a vague idea, can be very helpful. It can help you not only in implementing your idea, but also in implementing any marketing strategies or deciding how you want to position your product.