I think a history of statuses over time would be cool. I didn't even realize that was a replaceable event. A history of profile edits would be less useful, but how often do you update your profile? The ratio of kind 1's to kind 0's would be probably around 100.

Replaceable events are "good" for infrequently updated things, because otherwise you run into collisions from multiple devices updating the same list or what have you. Which means the volume isn't significant. But if the volume is, replaceables start to break.