Got 4 F seats to / from SEA for next year using up 2 x 241 vouchers which were about to expire. I did see noticeable improvement in availability but it was not universal. The 2 x club issue is very noticeable ex JFK but F is rare.
So have paid 100,000 more for seats but they were not there yesterday. Can't say am thrilled and having then tried to book some AA flights using avoid and AAmiles, it's clear crediting to AA is now a better option for me.