I'm sort of thinking about booking an RTW starting in south america (getting there on points). My first leg would be to the USA (home), then a few legs inside the USA before going to Europe, then HKG, then back to south america. The last leg is CX HKG-LAX-EZE.

Now to the question - I know on regular tickets folks sometimes 'miss the last leg' for hidden city pricing on regular tickets. Is it the same with the last leg of an RTW? Basically if I got off in LAX and took a non-oneworld ticket to my home would it be likely to run into problems for not completing an RTW itinerary?