The killer feature that got me into using it was the shell integration. Your prompt, input and command output are entirely separate entities rather than one single stream of text. It's like using a Jupyter notebook for the terminal.

That was also the thing that destroyed it for me, since navigating between history entries started getting more and more unreliable and sometimes clicking on the input box would randomly resize the entire window or move it between screens. I don't entirely know how they managed that one.

I can't compare to PowerShell, I've only ever used the Mac version of Warp (the Windows version is relatively new, I can't attest to the quality)

To be more specific about what I was saying, on Mac, in any standard text field I can hold Cmd and hit left or right to jump to the start or end of a line, or hold Option to jump a word at a time, and if I hold shift it'll select text. Option-delete deletes the last word, etc.

I've managed to get iTerm2 to do a lot of this stuff but, for example, Option-shift-left, instead of highlighting the last word, spits out the text ";4D"