In addition to new models and script tools it would be very useful, if (standard) tools from different toolboxes could be referenced in toolboxes (*.atbx or *pyt) to provide custom toolboxes with "favorite" tools needed by customers for their daily work.
1) Attached mockup (idea_toolreference.png) should illustrate this idea for "atbx" toolboxes.
2) In addition - but probably more difficult to implement - it would be perfect, if tool references would be supported in Python toolboxes, too.
