> - Because we're targeting at-scale monitoring of fleets of machines
>    in large numbers with identical hardware configuration, the
>    I2C counters (including NACK) can be used for apples-to-apples
>    comparison, for detecting anomaly, etc., while this may not be
>    applicable to a single machine.

Okay, I buy this argument. Let's work on this during the next cycle.
From a glimpse, we need some refactoring, like moving stuff away from
i2c-dev into the core and probably add a generic stats-struct which can
be attached to i2c_adapter. But I'll respond to that in more detail to
v3 when I have a better picture.