Discovery!

No doubt, command mode in vim et al. is probably the most powerful thing. However, as with anything shell, it all has to be laid out a priori.

Command palettes are fuzzy-finding, allowing reckless abandon for hacking into them. Single-letter commands have to be remembered, productivity suffers. Fuzzy is pretty much just as fast and grows with the user dynamically. I'll look into whether Helix has that.