Completion helps, but pushing too much in that direction (automated tool assistance) hits up against another thing: You want a CLI which is usable on a slow sys

Completion helps, but pushing too much in that direction (automated tool assistance) hits up against another thing: You want a CLI which is usable on a slow system or over a slow network connection, and those kinds of things are still very real, especially when you're trying to fix a system which is running a runaway process and therefore can't devote much CPU time to running a helpful CLI. There are other ways to fix that specific problem. None of them are as generally applicable as having a terse CLI.