Better support for Archimate computer architecture diagrams, including data support, click throughs, validations (right symbol, right diagram type, right connectors) similar to support added for BPMN2 in Visio 2010 (prem) and later (Professional)
Extra marks for being able to import diagrams from Archi (or even export to Archi although as a FOSS competitor I can see MS not wanting to allow roundtripping to Archi). (Archi does not use an XML format but it is parseable text with a model set split across several files/directories)
