I too had 2 very disappointing long haul economy flights last week in an exit row on the A380 with theoretical seating kicking in. Food was very good at LHR and the worst part was waiting 8 seconds at the first wing before I was waved through as i had to go landside for a short time. A very unbelievable long wait.
Got the Gold greeting on both long haul legs, glasses of LPGS galore, personal welcome by CSL and CSD on outbound and CSL on way back with very genuinely friendly crews, typically always the same on long haul.
Group boarding on the 4 sectors was poor as I really wanted to moan about it on here but Group 1 was strictly enforced.
Despite doing quite a few Y or W flights as well as a splurge of J and F flights last year and 2017 I will continue to pursue a service which is poor and reported by thouands every few days/weekly on Flyertalk.
BTW, I paid £450 to experience all that!!!
