@fil it looks like the axes aren't updating here anymore - is there a straightforward fix to that? I tried fiddling with the selectors, but without much luck. Thanks, and sorry to be spamming you!

I think the answer is tucked in here: https://observablehq.com/@observablehq/plot-bar-chart-transitions

yeah. in this example the axes don't change, but in the one you linked they do

This is pretty close https://observablehq.com/d/2d0f15b96082fc24