About 18-20 years ago, QF used to have 4 flights to LHR. QF1 from SYD via BKK, QF 9 from MEL via SIN, (both dawn arrivals) and QF 29 from MEL via HKG and QF 31 from SYD via SIN (both lunch time arrivals IIRC). They used to also run QF5 to FRA via SIN, at the same time, but don't think they ever had 4xLHR running concurrently with CDG or FCO services.
It looked like they were going to get back to 4 - now it seems 3 is more likely, but who knows they might add a MEL service, or the might go double daily from SYD if sunrise works out for them.
I wouldn't say its a shadow of its former self. There are a range of routes they have added or they have added frequency to (these are those that don't compete directly with the ME3). Examples are the rise of DFW, the restoration of CDG after 20 years (+ seasonal FCO), YVR, addition of frequencies to SIN, MEL-CGK, BNE-MNL, PER-JNB are the ones that come to mind.