Ask HN: Would you buy this product?

I'm thinking about maybe turning my sideproject into an actual product.

Teachers / Professors who have to read and grade lots of papers: would you be interested in a tool which automatically determined the most important sentences in a paper and then highlighted them inline?

Assume that the tool is at least 95% accurate, and that you can supply key words or phrases you consider important to weight the highlighting. It would do nothing to actually grade the paper - just help you skim through it more quickly.