My previous job was for an Acmi carrier where we deadheaded often, usually full fare tickets. I was fortunate to be in First class on Qatar once and had 4 hours in the first class side of premium terminal.....I have been gold or higher on all 3 alliances for years and have seen many of the lounges, but Qatars was probably the best. ( to be fare I honestly have to say the economy terminal is one of the worst...but hopefully that changes here very shortly!)
You may have access to lounge in London, but in Doha you are literally in separate building when you check in.
"If " the new airport opens and the 350 arrives in November as predicted( apparently it is ahead of schedule ) I believe that you will see an increase in hiring later this year......I have seen many new joiners who have been called out of the pool after more than a year waiting, so there is hope for those swimming.