What I'd love to see...
Man of Steel 2 2015 (Lex and Brainiac)
The Flash 2016 (Barry Allen orgin movie)
Wonder Woman 2016 (Using the animated movie as the template)
Batman/Superman 2017 (vs Intergang who begin selling alien weaponry to criminals in Gotham. Clark Kent is sent on assignment and you know the rest.Wonder Woman assists in the final battle)
Green Lantern reboot 2018 (Hal Jordan and Sinstero have been missing for months and our sector's "next in line" (can't think of the term I'm looking for) John Stewart starts the movie guilt ridden,crippled and depressed after seemingly destroying a planet by accident,eventually he regains confidence,clears his name and after defeating the main villain,is invited to join the Justice League)
Aquaman 2018 (Orgin movie that pits his brother against him. A sort of "underwater Thor" except at the end of this movie, Aquaman succumbs to Starro leading to...
Justice League 2020 (vs Starro, Martain Manhunter is a surprise character near the end.