I have calculated this would save between 50 and 150 human life-equivalents of time per year. You can see this calculation if you scroll to the bottom of the simulation page.
Sure, but it doesn’t add up to much useful time per person… Aggregate time saving across large numbers of people just seems like a fairly useless measure in general. To take it to an extreme, if you saved ten seconds in something everybody in the world does once or twice, you’d have saved a very large number of person years in aggregate but made basically no meaningful improvement to any individual’s life…