I won't quite pose these as predictions, but they seem like easy responses to the Republican convention.
1) Turn "vote your conscience" into a rallying cry. By far, the most embarrassing moment for the Republicans was the fact that when Ted Cruz said "vote your conscience," the convention boo-ed. An insider could understand why-- it was about the conflict between the neverTrumpers, who wanted to disregard the voters, and those who respected the decisions of the voters. But, to boo "vote your conscience" makes the party look wretched. Sanders has already endorsed HRC, and he can turn that into a major point of contrast, and turn, "vote your conscience, vote for Hillary" into the convention's catch-phrase.
2) Joke about the Melania Trump plagiarism thing, but don't overplay it. Just keep the story alive, and let the late-night comics keep the story going. This is a tough line to walk. The Republicans have a history of over-playing their hands, from "you didn't build that" to impeaching Bill. A few subtle jokes here and there. No more.
3) Praise McCain! Draw the contrast with Trump. McCain was a no-show at the convention, and we know why. Positive words about McCain might help bring in some disaffected Republicans and emphasize Trump's general douchebaggery.
4) During prime-time, hold up a series of quotes from books-- white lettering over black background, forcing the networks to keep them on screen. Fifteen seconds per. You know the ones. Quotes like: "Women-- you have to treat them like shit." Sort of a clockwork orange thing.
5) Montage of Trump praising HRC. Just for fun.
Would any of this matter? No. See previous posts. But, these strike me as the obvious things to do.