We currently have the KPI summary module: {F4705028} and the monthly metrics table module: {F4705030}
The idea is to add [[ https://en.wikipedia.org/wiki/Sparkline | sparklines ]] so in addition to the numbers, we have a quick glimpse at long-term trend(s) with the option of seeing the full detailed time series on those KPIs respective modules. There is [[ https://github.com/htmlwidgets/sparkline | an R package that adds sparklines htmlwidget ]] that we can try adding into the table ([[ https://github.com/wikimedia/wikimedia-discovery-rainbow/blob/f2b447ea92ef4903988234f50a65620c9ad4121b/server.R#L798--L820 | here's an example ]] of how I've added HTML+JS to make links in the monthly metrics table) and underneath the value boxes.
For the [[ http://discovery.wmflabs.org/metrics/#kpis_summary | KPI Summary Page ]], we are going to put sparklines under the four infobox. When user selecting "All available data", we will show the sparklines for all available data; for all other options, we will show the sparklines for the last 90 days.
For the [[ http://discovery.wmflabs.org/metrics/#monthly_metrics | Monthly Metrics Page ]], we will show sparklines of monthly medians.
P.S. Here's [[ http://leonawicz.github.io/HtmlWidgetExamples/ex_dt_sparkline.html | an example of adding sparklines to a DT table in a Shiny app ]].