Superman:
-Playing the paragon, truth, justice and dignity for all. Superman needs to be written in ways that challenge and test his humanity and humility. His power set is broad and scaled to take on some of the biggest bads in comics, though in a reinvention, this could be tweaked. Ideally, a Zero Year Superman, still learning the limits of his abilities. Something like a middle ground between Smallville and Earth One. Young, naive and idealistic, Smallville' comes to the big city of Metropolis and realizes the harshness of the world and how much of a difference he could make. 

Cons: Writing Superman often requires big threats that would be world-ending for other heroes. Superman has a couple of connected legacies that are pretty popular, and I wouldn't want around. 

Space Pirates & Swashbuckling Nightcrawler (Guardians Concept? Nightcrawler, Starfire, Rocket, Groot, Adam Strange/Peter Quill? Kitty as Captain?)

Fun with Dick and Babs

Cap/Bucky

Jason Todd and Rose Wilson: The Enemy of my Enemy is my Ex-Boyfriend