The transaction code analysis is inherent to SAP Signavio Process Insights and Process Intelligence, due to data collected. The value accelerators can be implemented along with the "Plug and Gain" approach.
Yes, it is advised and possible. I do not believe the base process maps contain the current version of S4 HANA to which they are aligned as the processes may span systems.
Perhaps a path to having a widget would be Fiori Analytical tiles on Fiori Launchpad. This would allow for a metric to be displayed, which would then link to the measurement.
