It would be nice if Discover could display the update history, with each individual update transaction shown separately, and the list of all update transactions sorted by date. This is especially useful for the case where something regressed on your computer after the last update and you want to see what got updated for troubleshooting purposes.
Maybe, I guess you're specifically talking about packagekit or any? Because the strategies that every system suggests to recover from an issue is different: snap it's channels, flatpak it's sources and internal versioning, distros it largely depends, on opensuse they have a cool stuff going on with btrfs. I'm afraid that the history would only be useful for reporting, but nothing one could do there.
That's currently true, but un-actionable information can still be useful--not only for troubleshooting, but also just making the user feel more informed and in control. Also, an Update History page would support and be a prerequisite for the potential future features of error recovery and/or package/app version rollbacks.
Muon has the history feature ad-hoc for apt. I'd say people can just use that if they need to interact with history.
But I don't want to use Muon...
If we are trying to streamline workflow: 1) Moun is a bit a more than the average user would be comfortable with. 2) This does not solve it for flatpaks & snaps <toMySelf> MAN THIS FRAGMENTATION IS FRUSTRATING </toMySelf> On a serious note: this is not the first time I see different packaging/distribution mechanism holding back feature development