I heard a rumour or two.
The reason the Singapore basing isn't up and running is because the people who came up with the idea and showed how the savings can be made by placing SOs Singa have not organised anything other than the basic concept.
This is probably why all the questions posted in this thread cannot be answered. eg Super, country of tax etc
This is partly due to the employment "models" put forward so far are either not as economically viable as first thought or ithe deal that does not fit the agreement.
And why would the Singapore ministry of manpower offer work permits for foreign workers to work for a foreign airline in direct competion with SQ !!
It would be within Singapores right to insist these jobs be offered locally first before bringing in foreign nationals to fill positions or the fact that QF gets 3 million savings on routes that it competes directly with SQ may be a stumbling block.