There are plenty of opportunites for these aircraft and airlines to use them, however, many will be watching SQ
closely to measure the flying publics' response to this new type of flight.
will use their A345's on BKK
will likely fly the same routes but from KUL
Personally, don't see why Eva are interested - most of the world is within their reach currently.
(if they ordered) could introduce SYD
PIA will likely use it for new U.S. direct routes from KHI.
South African (if they ordered) could introduce JNB
could order and beat QF
to the SYD
The usable floor-space/area is slightly larger aboard the 772LR than the A345, but as others have said, configuration of an aircraft is contingent entirely upon the respective airline's desire.