I noted that we have a specific-proposal tag. Looking at the questions, I found that it is for specific Area 51 site proposals.
I decided to write some tag wiki contents, but got stuck when I wanted to discuss the scope. Questions about specific proposals normally belong on Area 51 Discussions. The Help page for Area 51 Discussions simply links to a single FAQ page for Area 51 itself. It does not discuss the scope of Area 51 Discussions.
So the question is about the scope of Area 51 Discussions.
When should a question about a specific site proposal be asked on Area 51 Discussions, and when should it be asked on Meta Stack Exchange?
A little overlap is normal, but are there clear boundaries that we can establish here?
Is there a reasonable scenario where a question about a specific site proposal would be off topic on Area 51 Discussions? Or can they practically always go on Area 51 Discussions, and should we direct askers there?