We want to be able to access the instance attributes (as is done e.g. here: https://github.com/lykoss/lykos/blob/1852bf2c442d707ba0cbc16e8c9e012bcbc4fcc5/src/wolfgame.py#L9761 ). I realize we can set the attributes directly on the functions, but we've decided to not do that (it's a style thing, really). Although I guess a class method which then returns our desired method could work out for us.

While I still think that this kind of syntax might be useful for dynamic decorators (I know I'd use that when playing with decorators), I'm afraid I'm out of concrete examples to send your way.