Youngsters, the lot of you!! (Insert "Uphill Both Ways..." rant here) I want my ASR-33 Teletype commands back.
You hit Ctrl-G for Terminal Bell when you want to get someone's attention at the other end and they've wandered away - even made the transition to TI-99 Advanced Basic and MS-DOS, but they broke that going into Windows. Would be Real Useful today in Chat windows.
Ctrl-V for backspace and delete one letter, Ctrl-W for backspace and delete one word. Started for paper tape punches and card punches, still useful.
How about making "Print Screen" actually Print The Screen again?