The ability to pick any component from multiple SAM application monitors and AppInsight monitors and display them in a single sparkline widget.
You can do this in the classic dashboard system by configuring a PerfStack project and then using the PerfStack widget. We also have a highly customizable new dashboard system which also supports PerfStack visualizations implemented in SAM 2020.2 which is GA today! https://thwack.solarwinds.com/t5/SAM-Documents/Server-amp-Application-Monitor-SAM-2020-2-is-Now-Generally/ta-p/593800