I always leave that for other people to decide, because some of the things I consider to be disasters are some people's favorite movies. And that's what I like so much, is that you never know. Something intrigues somebody and means nothing to somebody else.
The real questions are: Does it solve a problem? Is it serviceable? How is it going to look in ten years?
You must accept that you might fail; then, if you do your best and still don't win, at least you can be satisfied that you've tried. If you don't accept failure as a possibility, you don't set high goals, you don't branch out, you don't try - you don't take the risk.