I hope he looks every bit as bad this debate as the last one. He'll probably loose either way, but I don't want him to have the satisfaction of knowing he won a debate, and I want him to be demolished come the 8th.
If he does well enough during this debate and the next, keeps his mouth shut until November, and the Clinton campaign doesn't release any more damning shit, he could do well enough to make it close-ish again (1.5-2% Clinton swing state average). Whilst that still likely means a Clinton victory, it won't be the smashing I want to see.
Keep in mind, the chances of one of those events happening is already pretty unlikely, and the odds of all three coming to pass are laughably low. But Hillary crushing him will put him back even further.
And I think that's exactly what she's planning to do.