Cargojock makes some valid points regarding most of the local F/O's in SIA. Through no fault of their own and due to the nature of the flying in SQ they do not get many sectors in each month and therefore are somewhat timid.
If I gave a F/O a sector into say Bali where the landing was on RW 27 with an ILS and where radar always vector the aircraft on a long right downwind to finals so the F/O has the RW on his side I used to say shall we tell them we have the RW in sight and we will go visual, not once did any F/O say yes despite having the ability to extend the centre line and know exactly the miles to touchdown.
I doubt if any of them would cope with a night visual into say Heraklion or a circling approach at Corfu to RW 17 or at Porta Plata circling to RW 09 at night.