Aquaman & Aqualad and Hercules

I have to laugh when I look at this team up because the Jason Mamoa Aquaman from Justice League looks like it will be an amalgam between Aquaman and Hercules.  He's got Aquaman's abilities and trident, with Hercules' personality and appearance, and a costume that combines the two.  Hopefully when I see the movie, the Orin/Arthur Curry side of Aquman will become more evident.

The Spectre Vs. Galactus

This is a battle that I would love to see.  Not only would it be a great match up, it would be a visual feast as well.  Artists seem to have a lot of fun with the super-science of Galactus' giant machines and The Spectre's displays of magic, so you know a story featuring both would have plenty of opportunities for inventive graphics.

The Teen Titans & Triton / The Atom Vs. Ultron

I used to love anthology comics and it's too bad that they seem to be largely a thing of the past.  I loved seeing a variety of different characters, with multiple stories in a single issue.  I was a fan of Marvel Comics Presents and Solo Avengers.  On the DC side, I loved it when World's Finest became a dollar comic with all of the rotating back-up features and of course, Super-Team Family had a huge effect on me.