It seems you have a choice. You can roll with the Conservative wing, or you can roll with the money men. Here is the dilemma, you can't win control of Congress without our votes. You cannot win the Presidency in '16 without the RINO money. I maintain that if you win Congress, the money men will show up, buying influence.
Sadly, I think the GOP establishment would rather remain a minority, and keep getting invited to the Washington cocktail parties, and keep getting the payoffs from Wall Street. What is it going to be; win elections or raise money for the party coffers?