Agreed, the predictive intellisense is really nice and a makes a huge difference in my productivity at the command line. It's similar to Fish Shell's features.

There are a ton of interesting and non-obvious options in PSReadLine, like setting hotkeys for running arbitrary PowerShell functions.

I've put together a nice combination of features in my personal profile available here: https://github.com/waf/config/blob/dfc50fbe7fac9536250c5550c...