The thing about Donald Trump and the healing process is that while his wounds are trying to heal, he is constantly pouring sulfuric acid on them. His wounds are too deep and too irritated to heal by November.
This is not, and will not be a typical race.
Fundamentally, at the end of the day, it will be. Republicans will still be Republicans. Democrats will still be Democrats. A 5-15% defection on either side is nothing new and is to be expected. Nor is this "I refuse to vote for the other guy" in the middle of a heated primary.
As always, Independents will swing the election. There's ample evidence for a swing into either camp at this point. Trump will run well with so-called Reagan Democrats. Hillary! should get Bernie's "Progressive" base.
I don't buy this "Trump is a terrible candidate" meme. He is on track to break the record for votes in a Republican primary in a race that started with 17 candidates for crying out loud. Underestimate him to your peril. 16 other Republican candidates already have.
I agree that Trump shouldn't be underestimated, but of course a more competitive primary is going to increase turnout. Trump breaking the record won't be proof of anything.