I get where you’re going, but going into boxplots (which in practice I haven’t seen for a long time) is not going to be picked-up easily, as the terms are not of common knowledge and complicate somewhat the interpretation.

Besides, on an weekly evolution analysis, just seeing the graphical/numerical weekly values and trend seem good enough to get a good sense of what is going on. The outliers have a strong semantical meaning, since they are tied to events such as initial airdrop being spent heavily over the first weeks, and the change of rules for Jr. Member achievement.

What is most important to monitor in my opinion are the flat based absolute weekly values, and their (descending) trend over the last few weeks. The rest is history really.