Would it be feasible and possible to have a 'Thank' button to thank editors to your question. When the OP 'thanks' an editor, the editor will get +2 or +5 rep from the OP.
This would recognise the efforts of editors who made your question or answer better. Since comments do not allow such remarks, the best way to thank them is to award them some rep for their efforts.
The OP has the choice to thank an editor since it's a way to express thanks.
Is this feasible?