Tonight I had some time to take a look at the list of feature requests of moreUnit.
Supporting move support for instance methods is not possible because eclipse does not allow participants in MoveInstanceMethodProcessor. So I left a comment in bugzilla and started to implement something different.
I have choosen a small enhancement: if you create a additional test method via the shortcut moreUnit appended the new test method at the bottom of the test case. I have changed that and moreUnit will append the additional test method directly below the test method in which the shortcut was pressed.