Lack of hover effects caught my attention as well. Additionally for time series data range selectors come in handy. Dygraphs [1], NVD3 [2] and Highcharts all ha

Lack of hover effects caught my attention as well. Additionally for time series data range selectors come in handy. Dygraphs [1], NVD3 [2] and Highcharts all have them. [1] http://dygraphs.com/gallery/#g/range-selector http://dygraphs.com/gallery/#g/range-selector [2] http://nvd3.org/examples/lineWithFocus.html http://nvd3.org/examples/lineWithFocus.html