Custom shortcut for app on macOS

Here is a simple solution. It just switches to Terminal and opens a new window.

1) In Automator, create a new "Quick Action" like the image below, and save it (for example as "New Terminal Window").

2) At the moment, this can be run already from (application menu)->Services->New Terminal Window

Now all that is needed is to add a keyboard shortcut.

Go to System Preferences->Keyboard->Shortcuts->Services, and add the shortcut of your choice (make sure to choose one that is not generally in use for your applications).

Note: the first time you run this Service (aka "Quick Action") from a different application you see an alert saying "(app name) wants to control Terminal" - of course you want to allow this. From then on it is just smooth sailing....

What is the problem with Command-tab and Command-N?

The first will switch to Terminal and tge second will open a new window.

You can make an AppleScript to do this, but I wonder if it is worth it, to reduce two keypresses to one.

I can see that this being something you do a lot, there is time to be saved by reducing it to a single shortcut; you don’t have to circle through all applications (you can navigate the application switcher in either direction) but again even a few extra arrow pressed each time can add up.

It is not hard to make a little script for this. I am away from my mac now but will do some tests later today and will let you know.

I've asked this be redirected to the Applescript related forum. This would require building an AppleScript to manage multiple applications at once.