I suggest making Enum members orderable, according to their order in the enum type. Currently trying to order them raises an exception:

    >>> import enum
    >>> class Number(enum.Enum):
    ...     one = 1
    ...     two = 2
    ...     three = 3
    >>> sorted((Number.one, Number.two))
    Traceback (most recent call last):
      File "<pyshell#2>", line 1, in <module>
        sorted((Number.one, Number.two))
    TypeError: unorderable types: Number() < Number()

If there's agreement from core developers that this is a good feature to add, I'll write a patch.