I recalled correctly the 6 A350 are on a 6 years lease. And from past communications, MH is not too keen about it (that it will be returned to lessor as soon as the lease expires).
They are on long term leases:
I find it strange that they are not too keen on the A350s too. So, if the A380 and A350 are not good aircraft for the MH long haul route to LHR, what other aircraft can they use? The B77W will still be too big and the B77E will be fuel guzzling.
Not all regional and intercontinental routes could fill or break even a 300 seaters daily. To maximize yield, Mh need to consider different model with capacity range from about 220 to 300.
Therein lies the problem MH needs to solve - why can EK do 2 x A380s and 1 x B77W from KUL daily and they cannot even fill a 300 seater flight from their home hub?
MH really needs to look at itself closely as to why its sales performance his not improved enough over the years, especially in light of the the fact that the passenger market doubles every ten years.
The CASK for say, the A332, is not going to be better than that for the A333 or A388 due to poorer economies of scale. They recognised that and that was why they have ordered the B737-10 Max. That will allow them to operate a 200 seater at narrow body economics.