You Cruz supporters are awfully gullible to think the RNC is going to let your guy be the candidate.
Cruz is an overly ambitious Freshman Senator, with an enormous ego and with messianic delusions fed to him by his father. The GOPe, as evil as they are, are head and shoulders above him in manipulation - they've got 50 years of experience at these things. His arrogance is only matched by his inside-the-beltway naivete, thinking he can take on these GOPe "advisors".
He and Kasich will be responsible for handing the nomination to one of the GOPe's picks, who like in '08 and '12, will lose to the Democrat1. Then the GOPe - who hates Cruz, will seize the opportunity to stab him in the back, blaming him for the Republicans' loss (it's all Kabuki Theater). Win/Win for the GOPe, Lose/Lose for Cruz.
1. The GOPe - a fully-owned subsidiary of the UniParty - wants to lose anyway. This keeps the gravy train rolling for them.