Every time I use my shortcut for Optimize Usings (subquestion - why isn't there a keyboard shortcut for this by default?) it pops up a dialog asking me whether or not I want to rearrange the using statements according to my current code settings.
I've looked for a way of suppressing this dialog (I never change my answer) but I haven't found one yet. Am I missing something? Is this worth raising as a feature request?