When I installed Xamarin Business License, I noticed that intellisense was not working with the xml and axml files.
To get this to work you need to manually add two XSD files, once you have added them you will get Instellisense.
First open any random XML file, once you have opened it you will notice that the menu bar will have a new menu item called XML.
Next navigate to XML > Schemas > Add
Next enter the path in the filename box C:\Program Files (x86)\MSBuild\Xamarin\Android and hit enter
You should see two XSD files, select them both...
