no one is looking for "closed cases where users have edited on the same page" as part of their normal workflows

This is actually an absurdly normal part of cases that go cold, as they might at 5 years. We get cases that show up after a decade of inactivity because someone noticed an overlap in pages edited (and subsequent review of specific edits).

I am not totally certain it makes sense for SI to be tracking this aspect of users at that age since we'll probably either have blocked (or not) and thus associated them directly.

This is actually an absurdly normal part of cases that go cold, as they might at 5 years. We get cases that show up after a decade of inactivity because someone noticed an overlap in pages edited (and subsequent review of specific edits).

Sorry, I meant specifically in the context of Special:SuggestedInvestigations

I am not totally certain it makes sense for SI to be tracking this aspect of users at that age since we'll probably either have blocked (or not) and thus associated them directly.

Which I think we're agreeing on here? But please let me know if this is useful to keep even for closed cases. We're looking to make cases filterable on properties like these.

Yes, I was voicing doubt about whether it was actually valuable in the context of SI (and the further exploration is how valuable it is after N years even for open cases).

(I also read to the end which was "nix them for closed cases" which definitely carry on with that decision either way I think.)