1) Constantine
While Constantine’s recent appearance in Arrow was billed as a one off, fans are already desperate to see more of the demon hunting Englishman back in this corner of the DC Universe.
A logical place for him to next show up is Legends of Tomorrow, especially as he has history with Sara Lance and is the perfect person to help the team out if they square off with a magical threat of some sort.
[zergpaid]Constantine never really stood a chance thanks to the appalling way NBC handled the series, but Matt Ryan was perfect in the role, and it would be amazing to see him get the opportunity to live on here as part of this team (especially if it results in him getting his own series again).
For that to happen though, you’d best hope the long delayed Justice League Dark movie remains that way, because Constantine’s appearance there could put the breaks on him having a future on the small screen.
I guess we’re just going to have to wait and see for now…