Improvements
Optimization, automation & upgrades
Improvements is where you track what is not working well enough and what has already been done about it, so the same problems do not get rediscovered from scratch every year.
Every organization has a list of things it knows should be better: a process that takes too long, a tool that does not quite fit, a manual step that could be automated. The issue is rarely that nobody notices these things; it is that the list never gets written down, so it circulates informally and the same frustrations come up in every retrospective.
Keeping a record of improvements serves two purposes. First, it helps prioritize: when you can see the full list, you can make a call about what to tackle and when, rather than chasing whatever was complained about most recently. Second, it creates institutional memory around what has already been tried, including the things that did not work and why.
Automation and upgrades belong here too. When a tool is replaced or a workflow is automated, it is worth capturing the before and after state so the decision can be understood later, and so the organization does not accidentally reintroduce the old way when the person who changed it moves on.