It has worked in the past, for example: I would consider the recent FontAwesome 5 kickstarter campaign a huge success both from a funding point of view and the backers getting what they wanted. This was only really possible in my opinion due to the reputation Dave Gandy built up by releasing the open source version of FA prior. One needs only to look at the myriad of failed software kickstarters for examples of what happens when a unknown person who hasn't proven they are capable of delivering what people want tries the same thing.