And we don’t want a lying, sneak who can’t win the primaries but has to do attempt to highjack the nomination by stealing delegates instead of winning them.
The problem with your statement is that "stealing" unbound delegates in primaries is like stealing bases in a baseball game - it's part of the game. The delegates Cruz is "stealing" are the one that are not bound to vote for anyone and are free to choose. Trump is supposed to understand the (complicated and nonsensical, but still clearly written) rules of the primaries and (1) have delegates in every district, and (2) recruit unbound delegates to support him. If the author of The Art of the Deal cannot close the sale with even a few unbound delegates, he's not the person he claims to be.
I want Trump to be the nominee, but I want him to win under the rules as they are currently written. If Trump doesn't hire the experts he needs to understand our stupid primary system, what makes you think he will hire the experts he needs to understand the rare parts of diplomatic nonsense that actually matter, once he is in the White House? If Trump cannot learn the rules well enough to beat Cruz in a GOP primary, what makes you think he will pay any better attention in the general election when he faces a corrupt expert who specializes in genuine vote fraud, like Hillary?