Similar to Process models, where you can find the occurence of the object in other models. It would add enormous value if, by selecting an IT System object, you would be able to see in which process models this system occurs (other than the Function Allocation Diagram). This enables easy navigating.
In addition to that, it would be great if it would also show the VACD Model Layers in the tab "Process Architecture" (Now, it only shows the BPMN models in which a system is used). As not all work processes defined in VACD require further anaysis in BPMN detail, but the information added to the VACD objects/ models can currently not be used interactively.