> It may change in the future, but bash is so entrenched, it's going to take an extraordinary use case for people to move from bash.

You don't know your history. Exactly such a move has already happened once, a decade ago. And it was a success.

* https://lists.debian.org/debian-release/2007/07/msg00027.htm...

* http://initscripts-ng.alioth.debian.org/soc2006-bootsystem/b...

* https://wiki.debian.org/BootProcessSpeedup#Using_a_faster_sy...