I disagree. Building a community around open-ended questions like this is next to difficult. SE was able to counter this because of the nature of the allowed q

I disagree. Building a community around open-ended questions like this is next to difficult. SE was able to counter this because of the nature of the allowed questions. A website with the premise of "ask programming questions that do not have a specific answer" lacks the specificity to cultivate a community that is connected enough to be lively (based on my small amount of experience with forum management). SE is in a good position to attempt such a thing because the community already exists. However, it may still face issues with liveliness. It may be a better idea to just allow these sorts of questions with a specific tag (and visual indicator on question links).