Aquaman
The book would retitled Aquaman and the Currys and the main focus of the book would see Aquaman juggling saving the world, family life, and ruling his kingdom. At times he would team up with his good friend the Atom (Ryan Choi) where they get into all sorts of outrageous adventures. From crazy get rich quick schemes to saving the world from Aquaman's annoying neighbor Black Manta and his jealous brother Ocean Master. Down the line Aquaman will be visited by a space imp, Quisp, that only he can see.
Batman
Now one element that loved about the Batman line, and pretty much everybody else, was the teaming of Dick and Damian. Now with the reboot they're breaking them and up and we are losing that great dynamic for two serious, grim people. There is a simple solution to this- Adam Westized Batman. Now you'll have ultra serious Robin and a happy go lucky Batman again. Instead of street crime Batman goes back to fighting giant robots, alien invaders, and mad scientists.
Superman
Now I got two ideas for Superman. First is Smallville: The Early Years. Here we witness Superman first act of heroism. Lionel Luthor is trying to close down the Smallville Rec Center. Clark and the Gang (Pete Ross, Lana Lang, and puppy Krypto) must compete in a series of events to try to save the rec center. Competing against them is Lionel's son Lex and his posse (John Corben, Rudy Jones, and Otis). Of course in the end Lex loses his hair, Corben is a robot, Rudy is a monster, and Otis is erased from continuity. All done in a very Archie style artwork.
Morrison is taking a Bruce Springsteen/Woody Guthrie so I thought of a different route. Escaping from a doomed world Superman comes to our world to make it all Hunky Dory. A glam rock space messiah fights the forces of evil and conformity- Lex Luthor, Intergang, and the Tyrant God Darkseid. It's Bowie meets Jack Kirby a combination that would make your brain bleed.