Frankly, if the goal is to implode the GOP as an entity...I can think of no quicker way to do it than for outsiders and rebels like Trump and Cruz continuing to do well with people while the establishment goons are seen in the open trying to sabotage them every step of the way and have this thing so grotesquely rigged that people are so turned off that nobody bothers with any of them ever again.
But, sadly I am used to disappointment so I think a slow death crawl is more likely...