The fact that we codeshare with MH on so many flights, is testament to what must be a very cordial relationship between CM and the upper echelons of EK management. MH stopped flying to DXB earlier this year, so any codeshare agreement between EK and MH only leaves EK to be the biggest beneficiary by far.
I can see CM joining EK but not having success in his crisis troubleshooter role for which he is renowned for. For a troubleshooter to succeed means there are troubles to resolve and the breathtaking arrogance along with the horror of admiting that there troubles that actually need solved, mean the status quo will remain, unless there is a change of top management.