First of all thank you @GoodTask for the "Integrate View" option, especially for being so quick with that.
I still prefer that the keyboard shortcut be Command+I rather than Command+D to toggle the details on and off. This matches Command+I being for "Inspector" in nearly all Mac apps.
Fortunately this can be set in MacOS keyboard preference pane.
- Open System Preferences > Keyboard
- Click "Shortcuts"
- Click "App Shortcuts"
- Click "+" button and pick application "GoodTask"
- Menu title: "Show/Hide Details" (Must match spelling exactly)
- Set preferred shortcut (Command+I for me)