To a first approximation, people who are ok with Bash as a scripting language do not know enough Bash to safely use it as a scripting language.

I see many insane constructs that accidentally work. I also know how much time it would take to explain expansion rules. And people don't even want to hear it because it shakes their simplistic (and inconsistent) understanding.

So yes, I hope we'll see something like crush replacing Bash. But I don't see how it will happen.