Excellent. If I could recommend some inspiration, NVD3 (no longer maintained) had the exact set of features I found useful, as does billboard.js (https://naver.

Excellent. If I could recommend some inspiration, NVD3 (no longer maintained) had the exact set of features I found useful, as does billboard.js (https://naver.github.io/billboard.js/demo/#Chart.AreaChart https://naver.github.io/billboard.js/demo/#Chart.AreaChart). Namely the ability to hide/focus/show certain series from the legend, showing all series in the interactive tooltip, and (NVD3) highlighting in the tooltip which series you are directly hovered over. These all become helpful when you start charting lots of stuff at once. Thanks for being the bedrock of all of this stuff!