With the reduction in flights leaving only 2 LHR services and the new DXB route further reducing layover/alowances I would expect QFUK would be a little less desirable for many - especially commuters.
I mean if you are used to doing long haul with 2 nigth layovers and having a few days off after back - moving to 1 night layovers with less allowances and less days off back at base will not be apealling.. I'm not 100% sure on QFUK's minimum days off etc but if it were say 2 days you could probably get 12 trips i an 8 week roster.