The problem with the fees office is the their boss, Mr Speaker, he set the tone - he, as the man responsible and in charge is the one to go. I would bet that he will be gone by the end of the month.
Yes - where crimes are committed, hang draw and quarter them
That does not cover the vast majority though so for paying back and subjecting themselves to the mercy of their local party organisation is the only way.. There are a good few, including some Conservatives, who I would love to see de-selected.