I've recently been working on a ConfigStudio extension in order to expose the Products Field Inheritance Definition information. As it is additional info for a field, I would've loved to make the info available by clicking a button on the view page of a FieldDefinition.
Unfortunately there is no way of adding actions to a ConfigStudio page. The actions are not configurable and it isn't possible to inherit the page (the page is sealed) in order to add actions by overriding the ConfigureToolbar method.
My suggestion: either allow to configure the toolbar via e.g. a setting or allow to configure the toolbar by removing the "sealed" keyword from the page.
Customer support service by UserEcho