Regarding this, I strongly believe the correct approach is L3 capability but only expressed through L2 features.

We're not at a point where it's safe for drivers to move their attention from driving, but the technology is mature enough that it can and should intervene wherever possible to avoid collisions and other incidents.

The expectation that drivers can divert their attention from driving to perform other tasks on the expectation that they can resume control at short notice is extremely misguided. This should not prevent similar sensor and software tech that could enable L3 autonomy from enabling more effective accident avoidance technology that intervenes in situations where the driver may drive in a careless or dangerous way.