Just saw a new editor with an interesting modal system that seems even more organized than Kakoune's.

https://news.ycombinator.com/item?id=41484503

To summarize, the idea is that every command has the form "selection mode" -> "movement" -> "action" instead of Kakoune's movement->action.

So, instead of having separate commands for "next character", "next word", "next structural element", there is one command for "next" (as well as a few additional motions). Every command starts with a "selection mode" like "column", "line", or "structural element".