Circle Pacific DCIR fares do not seem to have the price variability that the DONEx fares have.
22k, 26k and 29kSA fares are sold.
While your assumptions do seem to be/are valid, the mileage limitations will make getting to JFK/BOS on one end and BKK/SE Asia on the other an interesting challenge. KUL seems to be slightly less expensive than NRT.
I bought one (LCIR29SA ex KUL plus positioning) in 2018 for my brother in law who was gong to be staying in Oz longer than normal fares would accommodate and returning to the USA via Argentina. Alas he never did return to OZ using the tail end of the Circle Pacific ticket.
Sort of worked in the end as I was QFF Emerald at the time and was traveling as the tour guide.
Helped the annual mileage increase in wandering
Fred