Based on the description you've provided in the comments, I don't think there is any Stack Exchange site appropriate for your question. It is very open-ended, and broad, which is off-topic just about everywhere on the Stack Exchange network. As some of the comments suggest, it's an interesting question that could start a great discussion, but SE isn't about discussion. It's a Q&A site, not a forum.
For this reason, I disagree with HDE 226868's answer. Your specific question would be off-topic on Open Source.
However, if you come up with a specific question about a specific open hardware project, it would be appropriate on Open Source. Depending on the type of question, it may also be on-topic at Electrical Engineering Stack Exchange.