I like to put my using directives inside the current namespace, and not outside as VS and Resharper per default puts them.
Does anyone know of a macro/standard functionality that sorts/removes unused using directives and puts them inside the current namespace?
UPDATE - ReSharper 2016.1: This option is now moved to Code Editing → C# → Code Style → Add 'using' directive to the deepest scope
Have you tried the ReSharper option:
Languages → C# → Formatting Style → Namespace Imports → Add using directive to the deepest scope
I'm not sure whether R#'s code cleanup will reorder the existing ones for you though.
I've edited my default visual studio templates to put my using directives inside the namespace.
For sorting and removing unused directives, I use Power Commands for Visual Studio 2008.
Update for Resharper 2020.1: This option can now be found in Options → Code Editing → C# → Syntax Style → Reference Qualification and 'using' Directives
