I have an idea or subject that should have a Q&A, and want to propose a new site. How can I do this?
Related: What makes a winning site proposal?
As always, it is advisable to search for the topic of your proposal to ensure that you don't create a duplicate. Make sure you already have enough people that you can reach out to, to get the proposal off the ground.
If you are not sure about the scope of your proposal, you can discuss your ideas about the proposal on the Area 51 Discussion Zone.