Onward to the 2017 heroes
For reference
- Movies: Guardians of the Galaxy 2, MCU Spider-Man, Thor: Ragnarok
- TV shows (possible): Daredevil S3, Jessica Jones S2, Luke Cage S2, Iron Fist S1, Agents of SHIELD S4/S5, Most Wanted (Mockingbird) S1/S2, Agent Carter S3
- Fox also has a Wolverine sequel and the X-Men TV deals that they worked out with Marvel
Given that, I'll go with a semi-generic prediction
One of Drax/Gamora/Groot
A Spidey-related character
Sif
Jessica Jones or Mockingbird
2 Avengers-related characters besides JJ, MB, and Wasp (who is now my prediction for 2018 ie her movie)
And a wild guess: a mutant... even if it's somebody like Firestar or even Molly Hayes