At least for my use cases, it looks to be solving non-existent problems. The one thing that looked kinda cool to me was the expandable menus (for file management), but if I'm doing some file management that's not easy in a conventional CLI, it's really not hard to start a conventional file manager.
A lot of what I'm trying to do for workflow optimization is not switch around a lot between keyboard and mouse. Xiki can be used KB-only, but the features that look interesting still require scrolling of some sort, meaning arrow keys. That's not quite as disruptive as switching to a mouse, and it may save some keystrokes, but it nullifies multi-finger parallelism when typing - I can reflexively type familiar commands at a lot higher char/sec than I can repetitively press a single key.
tl;dr: It might be able to improve my workflow, but not by very much, and I don't think there's any way I would find it worth the non-standard tool set.
Where I can imagine it being really handy is for people who sort of know their way around a CLI, but haven't spent enough time there for use of it to be reflexive. It could make some things a lot easier in that case.
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