The Problem - The Stack Exchange network has so many sites with more being added all the time, a user probably doesn't know that a Stack Exchange site exists to answer a question they might have. In addition, when asking a question, the user might not know the best place to put the question. Asking the question on the wrong site could be downvoted, and it might not be in the user's best interest to ask the question if he/she doesn't know exactly where it belongs.
The Idea - A Stack Exchange site where you can ask any question, and it's up to reviewers of the question to decide which site would be best suited to answer the question.
I don't know much about the process for migrating questions to other sites as they stand today, but I think a voting system would be good, to allow reviewers to vote where the question belongs best, or someone with enough rep is allowed to move it directly.
The conditions that determine when a question is migrated could vary. Some ideas:
- After a certain period of inactivity
- When the vote gap between the #1 and #2 result is large enough
The voting system should also have some way to denote that this question doesn't (yet) have a Stack Exchange site suited to answer the question.
When asking the question, the page could provide a list of similar questions as it does now, and "suggested site" box. This way, if they're writing the question they could see some suggestions as to where the question might belong. They could then select one of those sites and have it submitted on that site. The primary data source for this would probably be the tags. For instance, if the user enters tags that have a lot of followers on StackOverflow, the page would suggest that the question might belong on StackOverflow.
This feature would allow users to ask questions without being as concerned about where it belongs among the vast Stack Exchange network. In addition, this could be a valuable resource in determining what Stack Exchange sites people would like to see. If there are a lot of questions that are filed as "Site Doesn't Yet Exist To Answer This Question™", that would be an indicator that there is a need that Stack Exchange isn't currently fulfilling.
Please comment with any suggestions or criticisms.
PS: I hope that this is the correct place to post this suggestion.
Edit Maybe a dumbed-down version of this might be useful. Instead of having the review process, just have a page for a user to enter their question, get suggestions to where it might belong, and choose at the end where the question belongs. Right now, choosing where to ask the question is the first step. I think moving it to a later point in the conception of the question would allow the asker to better categorize the question.