This script just adds a new child to the current entry. Its here because sometimes you are sitting in one of these smart folders and you want to outline, add entries to one of the memebers of the smart folder. Then you hit return and you go somewhere crazy. You didn't want to do that. So instead you hit whatever hotkey you assigned to this Add new child script. And it at least makes a new entry and puts it as a child of the current entry. Although unfortunately it doesn't make the entry name editable. You still have to click.
tell application "Mori"
tell front document
set a to current entry
make new entry
set b to result
move b to end of entries of a
set current entry to b
end tell
end tell