I´m thinking about the real differences between “Model” and “Package” concerning the structure of model explorer. In which cases it´s better to use a “Model” and when exactly I´ve to use “Package” to organize my model explorer? Of course, when handling with UML classes it makes sense to use “Packages”. But when starting to work with BPMN it´s better to use “Models”? Where are (dis-)advantages and drawbacks between these to methods of (sub-)foldering the model explorer at all?
Models represent logical division to a project. For example, a project for business modeling can have an “As-Is Process Model”, and a “To-Be Process Model”.
Package is more close to model element. You can have many packages, maybe nested, for organizing model elements. A typical use of package is for organizing classes.
As a conclusion, one may have the following structure:
[Model] As-Is Process