[Torie]

According to Caro in his most estimable book "Master of the Senate; The Years of Lyndon Johnson," the trick is to propose rule changes at the beginning of a session when there technically are arguably no rules other than ordinary rules which require only a majority vote. After that,the door is closed. There cannot be a change of rules in mid-session without going through the filibuster process, and a filbuster over the number of votes required for cloture requires 67 votes. So unless the GOP pulls a rabbit out of the hat, all of this plotting is going to be still born.

[Stay the course]

the trick is to propose rule changes at the beginning of a session when there technically are arguably no rules other than ordinary rules which require only a majority vote

That's what Nixon tried to rule when he attempted the original "nuclear option" in 1957. The ultimate result was a compromise (devised by LBJ as majority leader) that added Senate Rule V, paragraph 2: "The rules of the Senate shall continue from one Congress to the next Congress unless they are changed as provided in these rules."