Mine is that the dems are energized into 2019 for those state races that everyone but the most dedicated voters avoid like the plague leading the media to continue talking about the blue wave.
As for November '19 I can think of no funner outcome than the dems taking the senate too and Trump being reelected.
Politically, of course, I would like to see a full dem sweep.
To me worst possible outcome is all the investigations lead to Trump resigning and Pence giving him a pardon. Although that one does have /popcorn potential in state courts.