It's time to stop using these archaic shells, and make sure the newer ones are packaged for and included with popular operating systems. Better scripting languages have been offered in shells for a long time: https://en.wikipedia.org/wiki/Scsh

These days I've settled on https://www.nushell.sh/

I think https://oils.pub/ has a good shot at being the eventual replacement because it has a very strong transition story. Being backward compatible, while allowing you to progressively embrace a modern replacement, is pretty powerful.

i don't think nushell is better than bash for day to day things. it is nice when you need it though, and then you can just run it, like with any shell.