It would be great to move this out of beta and make it the default diff tool in the visual editor.
It seems to me that quite a few of the remaining tasks (e.g. T170134, T167510, T161489, T160588, etc) are currently blocked on design decisions - e.g. do we keep the sidebar? do we display items such as comments that you wouldn't see in read mode? etc.
There is a detailed discussion happening on T169325, some of which we have already acted on (e.g. improving the way moves are calculated).
But what are the next steps, in terms of making decisions? Perhaps we should prioritise doing the design research outlined in T171456 based on the current state, then go forward in light of what is found.