If it's considered to be not too backwards-incompatible, I think it would be nice to have str different from repr. That way we can finetune what exactly we need. But we can already do almost exactly that with *int* instead of *str*, so it's not too compelling.

Much more important thing is the "repr as inverse of eval". Is there any way we can have that for our own enums (as a mixin or a decorator)?

    @module_global(re)
    class RegexFlag(Enum):
        ...

It would be fantastic. :-)