I had a go at writing a patch for `__dir__` that would include any methods an enum class had acquired through `int`/`str`/etc. mixins, while continuing to ignore enum dunders and sunders (as is currently the case). My patch also allows user-defined methods defined in enum subclasses to show up in the `help()` output, whereas they currently do not, since `help(enum_member)` looks up `dir(enum_class)` rather than `dir(enum_member)`.

The patch is a fair way more complex than the the existing code, however.