I recognize that for security reasons we would not want the public to be to define new queries.
But there could be some really cool uses for a query created by an admin and accessible not only to admins and moderators but also to the public.
For example, it would be interesting let users do a full-text boolean search on the contents of a Category.
Or maybe a user wants to enter a keyword and then download a list of all the external links referenced in posts which have that keyword in the title.
I do not think this is possible currently with the Data Explorer plugin - correct?
How hard would it be to do this as a personal project or perhaps as a paid project in the Discourse Marketplace?