CTRL+clicking the "+" sign will open a new tab on the same container!!

It's a bit awkward although it works, until they get the CTRL+T solved.

God or whatever's big these days, bless you !

Ctrl+Alt+T?

On behalf of Linux users who use this to open Terminal... NOOO! I use this key combo constantly and it would take ages to unlearn it. Ctrl+Alt+T = open a terminal window, dozens of times a day every day.

What if the new tab had a command line inside of it? That would be perfect!

You're an emacs user, aren't you?

Firefox actually has a command line [0], though it's not a terminal. I'm pretty sure there's an extension for a real terminal, though.

[0] https://developer.mozilla.org/en-US/docs/Tools/GCLI