Well, not counting the twice weekly Donghai Airlines flight to Shenzen, DRW only has non-Australia service to SIN and DPS.

Since, they've ruled out LCC or non-Oneworld flights, they have ruled out SIN and DPS.

If they want to minimise their time on an LCC, then they could fly LON to DPS and buy a ticket on JQ since DPS-DRW is only 2 hours 40 minutes versus 4+ hours from SIN.