Great article. It's amazing how much ancient tech still pulsates in our sleek new machines.
a) Escape sequence to set the "dynamic" terminal title
b) how e.g. GNOME notifies you that a long running command has completed
c) how e.g. GNOME asks if you are certain to close a terminal, but only in case you're not in a shell
d) maybe readline or /etc/inputrc
e) bash completions maybe? it's sort of in there already