I would add one of my own observations. Some Conservative pundits are quick to throw out the idea that other Republican candidates need to learn from Trump and follow his lead. There is a problem with that assessment. Trump is a unique package. You do not learn his leadership qualities, you either have them in your genes or you do not. Trump emulation will not work. A Donald Trump does not come along just any old day. We need to recognize that fact, warts and all.
Likewise, for better or worse, you can't have Trump "be more humble." Once you start doing that, you've taken away a major weapon of his.
Reagan had a practiced humility that was in part natural---he was just a good guy---but also he learned in the 1940s that his acting career was dying, and he had to either become bitter about it or learn to joke about it and be self-effacing. Some authors think that bitterness is seen in his deprecating humor. I don't. But you can read it that way. Regardless, Reagan would never have Trump's "I did it" bluster. It wasn't in him, and certainly wasn't in W. Bush.
Trump is like the OSU football teams that ran the ball every damn play. You destroy them if you try to just have "a little passing."