BKK hasn't been mentioned as a possibility at all; it's between SIN and KUL. That said, it won't be a nonstop route to SIN, so it might well be that it stops at (for example) Helsinki, and you could fly AY to there and EI on to DUB. Personally, my favoured choice would be HKG, to tap into CX's hub there. The feed at SIN would be into QF's Aussie routes, but there'd be no (or very limited) connections to regional routes.
Whatever EI chooses, don't forget that EK is also looking at the possibility of a DUB route, so that will certainly - if it happens - permit a connection via DXB.