So this sounds like something that I didn't know I was interested in until you told me it was possible and/or being considered. What is useful depends on the scope, and how things are coupled to the Lightdash metrics. I can see this being most useful to me for on the fly arithmetic, or just random status checking based on pre-defined metrics. "lightdash stock 12345" where 12345 is a SKU that I want to check the stock of. "lightdash revenue last quarter", and the like.
Like I said it depends heavily on the scope and the coupling, and will undoubtedly be constrained by how rigorously and deliberately we set up our metrics.