Originally Posted by FlyBitcoin

Over the next few years, domestic scheduled WB's are losing F seats as more refurbished planes come on-line.
The first regularly scheduled domestic widebody with suites debuts daily this month on LAX-ATL-LAX.
Having taken this flight many times in the past, it has been a nearly impossible complimentary upgrade when there were 36 seats, and now there are only 28 seats in F/J.
Last year I applied a RUC and was 7th on the UG list for 1 seat for that flight on a Friday evening ATL-LAX. (Yes, I called the DM line twice and it was applied correctly)

And DL often charges more for cash F on these flights in advance, only to equalize the fares with the neighboring flights if demand underperforms. But it fills up with paid F (Hollywood-Atlanta connection) or SDC's with paid F on other flights prior to the 24 hour window as well as other mis-connects from earlier in the day.

WFBF is going to be the rule as more domestic flights with suites come online. The second regular 7CB domestic flight will be LAX-JFK-LAX rotation between LAX-HND/PVG and the JFK-BOM flight that starts in December.