We have decided to pause this redesign project for the foreseeable future.
This decision didn't come lightly, as we'd already spent a substantial amount of effort exploring and designing what we've shown on the project page so far. During this year's annual planning process at the Wikimedia Foundation we decided to prioritise other projects - ones which will more directly impact the patrollers and administrators contributing to Wikimedia projects today. This project was taking a longer-term view, aiming to grow the number of mobile-first experienced editors over time, and doesn't fit with this changing priority.
This isn't to say that this redesign will never happen - we will continue evaluating its priority next to our other work streams, and may find time to work on it in the future. We would also like to prioritise a much smaller project - simply adding an Undo button to the existing diff interface - so I may have further updates on that over the coming months.
Thank you to everyone who has provided input into the project so far. In the meantime, we're exploring the idea of automoderation.