Well, I've always felt that Humphrey never quite accomplished as much as he should have IOTL, and the closeness of the '68 race means that we're pretty well overdue for a TL on the subject. Plus, he was an early Democratic advocate for civil rights, so that's a bonus.
I don't have much more to add until the timeline starts in earnest, although I suppose an early prediction would be less of a backlash towards the Democratic Party with regards to national security since there's probably no McGovern here to paint them as especially weak. Still won't fix the race riots or the South turning red, but it's something.