I have an idea for Roger Rabbit 3. What if Dr. Frankenollie decides to defeat RK Maroon for once and for all. So, he scavenges an old animation cel of Judge Doom with the weasels. He then calls Roger telling him he is RK Maroon and that the Maroon Studios is licensing out their characters to a new studio for television. One of the new studio's animators is a man named Jeff Krazylooney (a clear knockoff of John Kricfalusi). However, Roger figures out that RK Maroon is not RK Maroon with the help of Karen Sympathy and the Scooby-Doo gang (who unmask RK Maroon as Judge Doom before Doom says the line "I could have gotten away with it if not for you meddling kids and your dog!") Speed Racer soon appears as a getaway driver for Roger. Meanwhile RK Maroon and his son RK Maroon, Jr. reveal that they actually are working with a TV studio, and Speed Racer sends Roger to the new studios of Maroon's partner "Delray-Charles" (a takeoff of Grantray-Lawrence).
I was thinking that an equivalent to Grantray-Lawrence would be included in the third movie, and I actually enjoy this premise.
I did have 1969 in mind for the time that the third Roger Rabbit takes place. That, and maybe a brief epilogue before the credits set in 1974 with Daniel Abbott knocking on the door of Richard Williams' (Gary Sinise?) London office.
I was kinda hoping to save Krazylooney for a Bonkers movie later on. Otherwise Krazylooney would only be 14 during the events of the story unless we move the story to a later year.