My money is on AM Anderson when he leaves MAA.
The trouble with Timo is that he is tarred with the "get the RN out of FW" debacle (the RN are now training and operating their people with the USN and Fr Navy in their CVs). H is also completely distrusted by the politicians and the Army (as is Dixon and others).
I fear for the future leadership of the RAF, their options are very limited and may require a jump of generation to get some credibility back.