A context menu belonging to a typedlist should enlist options related to that typedlist, not options related to the program, like 'create a new typedlist'.
So that's why I don't think it's a good idea to add that option to that context menu, as it shouldn't be there (in theory), because then you can also add other 'handy' options to every context menu
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The keyboard shortcut however will work as it will be picked up. I'll see if I can make that work.