barnold

EXAMPLE GIVEN by jsloan for claiming the Excursion Perk:
SFO-FRA / FRA-LHR / LHR-VIE-BKK-MNL / MNL-NRT-SFO: FRA-LHR will be free, but you'll have to pay for the others.

So why is this called a perk? How does it benefit a person to add another leg to his trip if he can't stay at either location? (In this example a person can't spend any time in Frankfort, Germany (FRA) or in London (LHR), but adding this FRA to LHR trip only extends his overall trip from San Francisco (SFO) to Manila (MNL).
From what I understand: If a person wants to qualify for the "perk" he needs to be in 3 regions and has to
(1) Begin and end the trip in the same place (Region A)
(2) can add a free short leg to their middle region but not stay in either location in the middle region without an exorbitant points fee
(3) fly from Region B to Region C on the same day he arrives in Region B.
(4) Return from Region C to Region A with no perk
This only multi-city plan with an "excursion perk" just extends a passenger's trip but offers no advantage. He would do better to fly round trip directly from Region A to Region B and home again.
Am I missing something in my understanding of the advantages of this "perk?"