Without dismissing the work of the CO to create the requested thread, but I would much rather be obtaining advice about pay/allowances/etc., from my own UPO or JPAC, rather than getting potentially duff info here... there are not not many serving personnel who are so isolated that they have no contact with their Adminstrator/UPO at all, either in person or via phone/email.
I think there is always room for discussion of a topic. Noone thinks that we can replace the actual UPO, but "should we get an allowance for...." is just one example of a conversation that would be very short if held directly with the UPO. "Maybe... next!".