I am not saying he IS the saviour, but I can tell you that he isn't part of the "political" establishment the way Clinton, Bush, Obama are. I do believe he wants to help the US be better, whether he can, different story.
Being a Billionaire, investor or even a sleaze doesn't automatically proclude you from having ideas that may help.
Again, not saying he is the answer, but some of his ideas have some merit. Even some of his whacky ones have SOME basis of merit. For example, he doesn't JUST want a wall, he wants a wall, and faster and more efficient processing of people wanting to immigrate from Mexico.
Time will tell, I suspect he never expected to get this far, and it wouldn't surprise me to see him have a "health" event that causes him to need to step down, in which case his VP (A career politician) would take over.
But that's the thing. He actually didn't say anything. He just kept repeating "Only I can fix it" but when asked for plans, ideas he would regurgitate "I will destroy ISIS"...