Does the Lion App Store have a debug menu? I like using the debug menu on the Snow Leopard App Store app by enabling it with 


defaults write com.apple.appstore ShowDebugMenu -bool true




Does the same toggle work on the Lion version of the app?
The debug menu is available in the Lion app store, with the same command as you posted.



I don't see any other hidden prefs of interest:

NSWindow Frame Preferences" = "-1 53 1289 1005 0 0 1920 1058 ";
ShowDebugMenu = 1;
WebKitUserStyleSheetEnabledPreferenceKey = 1;
availableUpdates =     (
    );