It would be nice to have a console drop down key (or combo), where the shell would slide down from the top of the screen. Refer to Linux based terminal emulators such as Tilda for an example.
@att0002, PowerShell is not itself a terminal emulator, it is a shell that runs _inside_ of one, so this is not the right place for your suggestion.
PowerShell Core works just fine with Tilda - by default, if it is your default shell, or via Preferences > Title and Command > Run a custom shell instead of the shell.
If you want Tilda to work on macOS and Windows as well, please open a feature suggestion at https://github.com/lanoxx/tilda (while running on macOS may be a possibility, a Windows version sounds like a stretch).
ConEmu is a terminal which can do this on Windows.
Please create this issue in https://github.com/Microsoft/Console. I'd love to see this too.
Thank you all for your replies. It looks like there is already a suggestion for this feature and it is in the backlog for the console. You can view it and vote for it here: https://wpdev.uservoice.com/forums/266908-command-prompt-console-windows-subsystem-for-l/suggestions/6510797-global-hotkey-to-activate-deactivate-running-conso
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ConEmu is a terminal which can do this on Windows.