On the subject of 'MAN vs London, I have found out whats holding up Hainan. Stansted.
Basically, MAG used a 'double airport' incentive, whereby it was a lower, flat rate for Hainan to serve both MAN/STN.
It seems on the surface, everything is ready to go, but, it now seems that for the London flights, LGW were not prepared to give in so easy, and thus some last minute negotiations are needed.
Apparently the MAN flights are safe and STN has still got the edge over LGW, however, MAG are really interested in 'doing the double', hence the wait.
Seems like some peoples fears are being realised (ei MAN flights going through, then MAG dangling STN in front of the airlines too)