They're good, of course, but most of them look complete enough to at-least release some sort of 'beta' build for people to explore in. Giving a project a very long time to complete leaves a very large possibility of forgetting, losing interest, or by other means just not be able to complete it. With all the images you release of these 'projects' it's kindof like teasing people of what they wont be having in a very, very long time, or possibly never, because they look finished.