Maybe "idea" is a too vague term here. I'm not thinking about business and large scale things. Only small little things that are in the "sideproject" category. And it's not that it's not good enough for me but having a full time job and other responsibilities seriously limits my abilities for execution.

Here the "refinement" of the ideas could be shared like it is in a company environment or in the open source development space (but that is more the execution part).

Other than that I see your point and that's why I was (and still is) unsure about this. Maybe it can never work in practice...