1. ...
   
   
2. We can already easily get the same functionality using standard Python. E.g., instead of doing foo?["bar"]?[0]?["baz"], we could do lookup(foo, "bar", 0, "baz") where lookup is a function that looks roughly like this:
   
       def lookup(item, *parts):
           for part in parts:
               if item is None:
                   return None
               item = item[parts]
           return item