Maybe it's just me, but I think Moylan's playmaking might go backwards at 6. At the moment he is taking the ball 2,3 sometimes 4 passes from the ruck. At five-eighth he'll be first, sometimes second.
That makes the defensive line a lot more compressed, and will certainly limit his options.
To maintain his current style and output we're going to need a similar style fullback (which we don't have in DWZ, Hardaker or Edwards) or we need to insert forwards into our set plays to get Moylan out a bit wider, in which case I'm left wondering why bother changing.
I accept the criticism of his kick returns, but I can't help but see a relationship between that and the overwhelmingly positive reception to Mansours running metres. Perhaps Mansours impact would be restricted if we had a stronger runner at FB.
I'm in the wait and see camp at the moment. If we can get TMM back in first grade next week, and he kills it at 6, we can work around Moylan's deficiencies at 1. Else we can groom TMM to succeed Wallace at 9, and move Moylan to 6.