Kickstarters are like strippers. The good ones get funded because they have enough to show and know how to a) work their audience and the customers know they've got a good worker on their hands, either because they've seen their work before, or it's something they've never seen that intrigues them. On the other hand, bad strippers don't get funded because a) they don't give you anything interesting to think about with poor presentation and assets, and they keep asking for money so they'll do the work they're already supposed to be doing.
That's what I think. It actually really pisses me off when I see people post kickstarters that essentially say "I have this really cool idea! I haven't really made a game yet, or know how to make one, or have people that will help me do it. But if you give me money I'll think of something!" It's disrespectful to the people you're attempting to reach, and to the industry in general. If you have a really good idea that you think is worth people's time, and you don't have a name that people have heard of/trust, do something about it. Start making it. Don't wait for someone to throw money at you for something you haven't done. When you get recognition for a fresh new idea with the execution to match, people will be happy to support you.