> Our current target is to build a drop-in replacement for all common use cases of sudo.

In my understanding, the same general comparison as doas to good old regular Classic (tm) sudo. They're going for "basically the same thing, but with some stuff removed" rather than a re-think of the tool.

It's like harm reduction: the idea is to be able to replace sudo with a memory-safe version where sudo is already entrenched in a workflow, not to be a successor that's somehow better in a more abstract sense.