DEN-LHR was originally planned to be seasonal and end on Oct. 26th. Back in August it was announced the the flight would continue the entire year. I would assume at some point the staffing would increase to cover all three flights (NRT, FRA & LHR).

It's pretty safe to assume that if LAX is getting W flying, they are overstaffed on the 787. Just one way to move the flying to where the bodies are. SSC report always talks about trying to limit W flying as much as possible.