Black Canary and Misty Knight

I really enjoyed Simone Missick in the role of Misty Knight on Netflix' Luke Cage series.  It's too bad that we really only got one scene of her and Colleen Wing in action together.  I was looking forward to the creation of Knightwing Investigations, but that's just one more plot thread from the Netflix Marvel shows that was never fulfilled.  Hopefully down the line we'll see the characters again in the MCU (if not the actors and actresses).

Batman and Groot

I am hoping that we hear some more news about who will be joining Robert Pattinson in the cast when he takes over as Batman.  With Commissioner Gordon, Alfred and at least five villains in the mix, there are plenty of roles to be filled.  One rumor I have heard is John David Washington for Two-Face, but nothing concrete yet.  Ralph Fiennes has expressed interest in playing Alfred, but I am not sure if anything has come of that either.

Mera & Namorita

Mera is the next big DC casting that I am really curious about.  It's hard to imagine that the character will not  be part of the Aquaman film, and DC will certainly want another  heroine aside from Wonder Woman to help populate their cinematic universe.  Perhaps Jessica Chastain would work well in the role?

Batman and U.S.Agent

This is one of those pairings that I have wanted to do for years, since the early days of Brave and the Bold: The Lost Issues, but I never got around to it until now.  I am not sure of what U.S.Agent's current status is in the Marvel Universe, but I have enjoyed his appearances throughout the years.  I especially liked when he would work with Captain America's usual allies, and seeing their reaction to a shield-slinger with a decidedly different personality.