1. The Cageverse. A Reboot of all the Movies where Nicolas freaked out the most. From Vampire's Kiss to Deadfall... They're all connected somehow.
2. A Hipster avant garde version of Falling Down starring Joseph Gordon-Levitt. He gets pretty upset he doesn't find his organic carrots in the local market and instead of going on a murderous rampage, he decides to have useless philosophical debates with random people he finds on the street. The Extended Cut is 3 hours long.
3. A sellout reboot of They Live. Replace the sunglasses for some technobabble prop. This prop would be designed even before the Movie was written, so they could make a lot of bucks selling its expensive licensed copies. In the Movie itself, the eyeglasses prop would be justified as the creation of a disposable scientist character who dies at the beginning... His death now is the motivation why George goes after the aliens. Insert some embarrassing placement of the "Bubblegum line" made specifically for the Trailer. The Aliens themselves are generic CGI 8-Eyed Tentacled Things. The "BUY", "OBEY", "CONFORM", etc. messages from the advertisements are now in an Alien alphabet since the original ones made the execs feel a little bit awkward. The Ending would be modified, Nada talks peacefully with the Aliens and he asks them to leave. They happily comply, obviously! He uses "the power of love" to convince them leaving Humanity alone...
Anyway, these are the worst ideas I could have under 5 minutes.