1) Love the idea. I think that would be a great visualization. 2) Agreed, a simple function for this would be nice. You can currently doing it using some math

1) Love the idea. I think that would be a great visualization. 2) Agreed, a simple function for this would be nice. You can currently doing it using some math based on the year, but it is a pain. 3) I think this would require collecting more demographics data to have a reasonable level of accuracy. I think the added complexity in UI might not be worth the insights.