- coder A puts up a revision with reviewers R1 and R2
- R1 accepts the diff
- R2 comments with something profound, causing A to doubt the very core of their being (and their diff)
- A updates the revision with a new approach, and requests re-review from both reviewers
- R1 doesn't notice that the diff requires their attention, because it's way down in the Other Revisions list at the bottom of Differential, instead of in the Ready to review list.
It seems to me that the 'request review' action should bring the revision to the attention of all reviewers, regardless of whether they've accepted an older diff.