How to achieve desired automatic scrolling behavior

[Barry OReilly]

For the most part, I want the behavior of scroll-conservatively 1, where
navigating line by line doesn't recenter, but jumping to a different part
of the buffer does.

One jarring behavior I wish to customize away is when going line by line
across a line that wraps visually, the behavior is to recenter. How do I
have it not recenter in this case?

Also desirable is when scroll-conservatively==1 would cause a recenter, it
would instead use the scroll-*-aggressively setting. Setting both of these
does not have that effect.