You may only get one chance for a good first impression of this project, but you can also get first impressions on other projects. Release early is all about finding if you are making something people want.

EX: I really want an improved version of PowerPoint that let's me embed editable graphs without crashing and it would be nice if the interface was cleaner. Now if I had a lot of money I might try and build a competing version of PowerPoint but what I really want is a feature, now what's the minimum product? How about a PowerPoint add on that cleans up whatever the bug(s) that causes the problem in the first place? Or a website that fixes broken PowerPoint files? Ok what's the minimum amount of work to to start to get money from this idea?