Powershell is just plain a great shell. Blows all the *sh variants out of the water. I'd love for it to gain traction in Linux (so that, for example I could use it as my shell on my desktop) but I don't really see that happening.
I use MacOS on my personal machine and Linux for various shellboxes and I switched to Powershell years ago and haven't looked back. Occasionally I invoke bash as a language runtime for checking shell script stuff, the way I would any other language's REPL, but for a shell? Powershell is strictly better.
The one actual problem with Powershell in this area is quoting for external commands. It's solvable in scripts by replacing certain things with double-quoted equivalents but not really interactively, and it is an occasional pain (though I still think it's overall less of a problem than quoting in general in bash and its ilk).
