You see traditional Unix/GNU programs as working well and interacting will. I see a programming paradigm designed for six-char identifiers, not designed for whitespaces and punctuation in names, running in something that emulates a physical terminal that emulated a paper-based terminal. Terseness is there, but ergonomics of use for non-utter-experts could be improved.

I think that the shell paradigm could be so much better. If there's a momentum to make a change from that, I'll jump on the bandwagon. Any change is better than the current state of the shell.