How about Trump and Cruz agree to back each other. They prove they are statesman seeking the common good.
The candidate with the most delegates gets the nomination. Second in delegates gets his pick of any other position.
The GOPe gets crushed like the dogs(Dogs are better than this.)they are.
The Country is saved.
If they were running neck and neck and it looked like neither would get the requisite votes, that might make sense. Else it's like asking the Broncos to accept a tie with the Panthers with a lead and seconds to go - makes no sense for the top dog to strop to scratch the ears of the beta dog - the beta dog needs to step up and work for what the People want, not actively try to thwart them "for their own good and by hoping for a contested/brokered convention.
Rubio showed more class by getting out of the way - hopefully Cruz will not follow this through to a ugly and messy end, but will wake up and realize that as a self-stated "champion" of the People, he needs to work for the People not for himself.