The process does need to be called into question. It's designed to let the establishment pick their establishment candidate. That's how everyone got McCain and Romney.
No, dumbass... that's exactly NOT how the GOP got Romney and McCain.... Romney and McCain both went into the GOP convention having secured the necessary
MAJORITY of delegates! IF either candidate had gone into the convention with simply a "plurality" of delegates, you would have held the convention in the middle of a busy freeway to have prevented them from being the GOP nominee. But they had the MAJORITY and nothing could stop them.
And they got on the ballots, how?
We had the exact SAME process we have now... A MAJORITY of republican delegates at the convention HAVE to support the nominee. It's been this way since 1856.
Romney and McCain went through the exact same delegate process as Trump and Cruz... nothing has changed... they had to go out there and compete for the delegates and secure nomination by getting a
MAJORITY. As weak as they were, they GOT the majority! ...And hey, Trump MAY do the same?

But NO ONE gets nominated without the
MAJORITY.
There have been at least three GOP primaries where the candidate with the most delegates didn't win the nomination. The first being the very first Republican nominee, Abe Lincoln. William Seward had the most delegates and ironically, led a "populist" campaign against the more principled Lincoln. Lincoln won the nomination on the third ballot.
Next was Dwight D. Eisenhower... went into the GOP convention trailing in delegates to Taft, the 'establishment' pick. Ike won on subsequent ballots. Then, most recently, in 1976 when Reagan trailed Ford... in that case, the "plurality winner" prevailed and got the needed majority on the second ballot.... again, this could very well happen for Trump.
But there are three great nominations for the GOP candidate.