I hate two-way stops -- they're dangerous in both directions!
1. I'd like to route to avoid two-way stops (where reasonable ... no zigzagging, but choosing a more circuitous route should be an option to improve safety)
2. I'd like to avoid arriving at the "stop" direction of a two-way stop in almost all cases
3. this is like the infamous ("unsafe left") and I'd like to have a "right turn only" mode where arriving at a two-way against the stop to turn right is okay, but to go straight or turn left is a no-no.
4. see also my "young driver aid" mode suggestions