Years ago, RBA had plans to serve HNL, via MNL. Landing rights could not be obtained from the Philippine Govt. and the whole idea was shelved.
I would be surprised if the 764 was a serious contender, considering the range limitations. The 763's operated at present aren't quite optimised for RBA's route structure, but that was the trade off for getting them cheap from AWAS.
RBA often looks at different aircraft, but nothing ever comes of it... the A340 and A321 were pitched to no avail.