observed definition change
The color progression from the sequential palette works for small multiples, but when stacked, the middle tones wash out against the background — would benefit from a diverging scheme or explicit labels. (edited to fix a unit)
Could the variance in Q2 be explained by a shift in the user composition rather than a genuine change in underlying behavior — are we segmenting by cohort maturity or acquisition channel? See /u/plg_rosa_lindgren/p/plot-0012.