This was my first thought. As a user of remacs I'll never notice any tangible difference to emacs if the remacs folks are doing their job well. At least not for

This was my first thought. As a user of remacs I'll never notice any tangible difference to emacs if the remacs folks are doing their job well. At least not for a few more years perhaps. This may have a payoff for maintainers. If they can convince enough of the core developers to join them or build a large enough community. If their theory is right it's easier to develop and maintain Rust code than C code and if it makes more people happy we may see remacs able to forge ahead with more/better features, faster than upstream emacs. But from my experience with projects like this it's going to take them a long time to catch up and then someone down the line is going to have to make the decision about whether to break from upstream or to follow it.