St. Clair Software has released Default Folder X 4.6.6, reassigning the Command-D shortcut to jump to the Desktop rather than invoke the Duplicate command. The Open and Save dialog enhancement utility now enables you to use its Rebound feature (to quickly return to recently used folders) in column view, fixes a bug that caused some apps (like Monosnap) to save files with the wrong file names, and disables audio previews by default to avoid triggering OS X to switch to the high performance graphics processor on some Macs. ($34.95 new, $10 off for TidBITS members, free update, 10.7 MB, release notes, 10.6+)
Open a Finder Window with the App Switcher
If you don't have any Finder windows open and want to switch to the Finder and open a window in one fell swoop, bring up the app switcher with Command-Tab and tab over to the Finder icon. While still holding down Command, press the Option key, and then release the Command key. You're switched to the Finder, with a new default window open for you.
Default Folder X 4.6.6
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Special thanks to Richard Rayne, Frank Hartzell, William Sharp, and
Jeremy Whipple for their generous support!
By reverting command+D to "Desktop," I can once again use my Mac intuitively, quickly, and nicely, returning DefaultFolder X to my most indispensable utility for the Mac.