As a macOS user, I love macOS's ability to let the user set custom keyboard shortcuts through the OS preferences:
https://support.apple.com/guide/mac-help/create-keyboard-shortcuts-for-apps-mchlp2271/mac
I am aware that Firefox has default shortcuts for "Next/Previous tab", but they are too clunky for me to use, especially if I am using my laptop's keyboard.
Other browsers already do this on macOS:
Safari has a menu command "Window > Show Next Tab"
Chrome has a menu command "Tab > Select Next Tab"
I'd love if Firefox could do the same, so I can use more ergonomic keyboard shortcut for such a often used commands!