2. With few exceptions, projects that have been proposed have been insufficiently interesting or possibly just badly described
Just what it says. In most cases, the projects are just a way to get some free labor and do not really capture my imagination and lead nowhere. My creative input is not required or desired. In one case my creative input probably was desired, but my friend did not actually tell me that, I had to figure it out later which, yes, is a little weird but there you are.
One notable exception was an excellent entrepreneurial project by someone who will go by the initials of ES. His project is/was actually a very good and challenging idea that under the circumstances I was not able to achieve. This is a big disappointment to me, but is not a reflection on him. He totally got it.
But why mince words, the free project is basically dead, unless it is my work.
Alternatively, of course, you could pay me, and then I am happy to do whatever you want. Its the way the free market system works, it makes whores of us all.