Provide IntelliSense and validation for Add-in Commands manifest elements
The XML-elements that create Add-in Commands don't validate (give warnings) and don't have IntelliSense. Suggest making them validate and have IntelliSense.
Thank you for the feedback. Visual Studio did add IntelliSense for this section shortly after you posted your suggestion.
Office Extensibility Team
Gavin Barron commented
The underlying issue here is that the schema defined in offappmanifest-1.1.xsd listed at https://msdn.microsoft.com/en-us/library/office/fp123711.aspx doesn't contain a VersionOverrides element.
This element is in the generated manifest.xml file to define command actions. Either this element should be changed to match the schema or the schema used for validation needs updating.