After digging around some more I found more hidden INI keys. Again, use these at your own risk.
whileLoopSharedCloneOptions=True - adds an additional context menu option to the While loop; not sure what the different options do
GenericsAreGo=True - enables the creation of generic VI's (danger!) by right-clicking a control or indicator and selecting "Generic"
ActiveXMoreContainerOptions=True - Adds "Persist State To Edit Mode" and "Destroy And Recreate When Run" to the Advanced submenu of