No, not at all! Yeah I could do that, and it's something I considered, but I feel like working in a shell shouldn't be such an unrelenting hack. FWIW I think every shell _but_ bash supports it, I was just hoping to move to something that's overall nice to use in the process.
Perhaps you could start a timer in a preexec, and stop it in precmd. If the elapsed time is greater than some value, notify-send yourself a message that a long-running command has finished.
