I believe there's a huge market for bridging the power of a structured query language with non-"techy" folks, much like how we see no-code solutions popular among folks who would have (self-admittedly) never been able to figure out how to wire up two RESTful APIs.
My approach to solving this in the past was to create a custom syntax with a transpiler that took a type of English language grammar and converted it into workable SQL. Where I branched from your intention was actually for my book on data science in higher education -- I wanted to have a language where a researcher could say something like this:
"Who is more likely to drop: a student with circumstance_a or a student with circumstance_b?"
That's a rough approximation, but I think you can see what I am talking about.
Are you looking at the text-to-speech space for people to babble at their computers? Or are you looking for some kind of GUI system where people can plug things together? Or are you looking for a grammar (like my approach)? Would love to chat.