In gnome-terminal, I can just press Alt + (1, 2, 3, etc.) to switch to specific tabs. I can also use Ctrl + (PgUp / PgDn) to cycle through tabs (admittedly less convenient, but it can be remapped). ...
I want to run a command (assumedly using dbus-send) that opens a new tab in a gnome-terminal session and runs a command. Is this possible?