Zsh is already the shell of choice for power users. It’s flexible, scriptable, and packed with customization options. But the more time you spend inside it, the more the edges start to show. Small friction points pile up. Commands slow under heavy load. Autocompletion gets clever but not clever enough. Precision sometimes falls behind speed. These are gaps, and gaps are opportunities.
The first request: native async execution for heavy completions without extra plugins. Raw speed at the core, not as a patched-on improvement.
The second: a richer, persistent undo history for both commands and session context, so workflows can rewind without tangled hacks.
The third: built-in context awareness that adjusts suggestions and completion behavior based on current directories, git states, and command patterns.
The fourth: easier, scriptable sharing of function definitions across projects without fragile symlink forests.
These aren’t wishful tweaks. They’re leverage points. Small shifts that, once built, would smooth the edges for everyone. When a shell feels invisible in the hands, you think less about it and more about the work you’re doing. That’s what efficiency means here—removing the drag until only execution remains.