Pressing "enter" in a headline to make a new headline is consistent with the way many other text-mode outliners have worked in the past. Ctrl-O to open a line is an Emacs standard keybinding.
I don't really have an issue with the way this works. -- Bob Newell Honolulu, Hawai`i * Sent via Ma Gnus 0.12-Emacs 24.3-Linux Mint 17 *