One feature of other shells (e.g. zsh and tcsh) I'd really love to have in bash is "|&", which redirects both stdout and stderr--basically just a shortcut for "2>&1 |". Has this ever been considered for bash?
It may not seem like much of a difference, but it's saved me an enormous numbers of keystrokes over the years. There's nothing more frustrating in bash than getting to (or worse, just past) "|" and realizing I need to redirect stderr as well as stdout, then cursoring back and executing a keyboard-acrobatic "2>&1" for the zillionth time.... - John