Other than James Comey giving the keynote address, the convention will feature something by Michelle Obama the discontented shrew. I made a comment that I'd rather have a horse's head in my bed than Michelle Obama, which prompted the cartoon (above).
There is a rumor that Michelle Obama is horrified by the possibility that Melania Trump will replace her as First Lady. I think that she'd be far more comfortable with Bill Clinton as First Husband, possibly because they share the same base gender? (clearly Michelle made the Jenner-style transformation successfully - if you can call that successful)