With Trump you would be replacing one evil narcissistic idiot with an inept narcissistic idiot.
My sense is that under a Trump Presidency, there would be some issues, those core issues that make up the centerpiece of his campaign, where he would do extremely well, maybe better than any other candidate would be capable of, but that in other areas where he has less interest, he would shoot from the hip and would likely perform poorly, maybe even disasterously.
I'd settle for that.