I think u are right to replace find with narrow. I would also like it not to enter automatically (like narrow now, unlike find now) when it finishes with 1 search result (did I miss an option?, if not, it should be an option that affects both travel & narrow/find) something like "set auto_open true/false"
Btw, one wish about this. Currently you must always use true/false with options. I think it would save some time if it just toggles current value if neither is provided because, this is certainly what you want in interactive mode.