I would really like a full door to door with one payment. Put in the destination, one price and get a Waymo on each end. React as best as possible to delays, etc.
Took me a while to understand what you meant by "on each end". I'm guessing you mean as a connection to some public transit in the middle?
The Transit app is great for this kind of stuff and many cities have integrated their transit options under a single payment system so you could actually do this. It can even take into account if you have a bike or not and you can specify stuff like "avoid busses".