  The Visual Debugger is an IntelliJ IDEA plugin that presents debug
information as an object diagram to enhance program understanding. Reflecting
on our past development, we detail the lessons learned and roadblocks we have
experienced while implementing and integrating the Visual Debugger into the
IntelliJ IDEA. Furthermore, we describe recent improvements to the Visual
Debugger, greatly enhancing the plugin in the present. Looking into the future,
we propose solutions to overcome the roadblocks encountered while developing
the plugin and further plans for the Visual Debugger.
