As we saw from the recent scooby doo movie, which include the 13th ghost. Here an idea for a Trilogy of new Scooby-Doo movies and all three would be a continuation of the Hanna-Barbera Superstars 10
1. Scooby-Doo and the return of the BOO Brothers.
After encoutering a case they can't solve, Scooy and Shaggy are reunited with
With Freako, Meako, and Shreako a.k.a the Boo Brothers who want to join imnthe case since they lost their home and need a new place to stay
Also someone from Shaggy's past arrived to get him.
2. Scooby-Doo and the Ghoul School Dux.
After solving another case, The Mystsery Machine broke down, resulting of them stopping at an abandon building, Where it turnsout to be Grimwood school for Ghouls, And Shaggy and Scooby are reunited with the girls, Who are.now teachers. Just then Miss Grimwood arrived and inform Shaggy and Scooby that they still have 3 days left of their jobs at the School, And must complete their jobs, With the others agreeing to help. Meanhwhile someone tries to ruin the school.
3. Scooby-Doo and the WereWolf Race.
When Shaggy get a video message from Dracula, Informing him that it's time for the annual monster race, But before Shaggy declined, Dracula revealed that he captured Googie; His ex-Girlfriend from his racing phase and is force to return back into a werewolf, where if he wins then Googie is sent free but if he loses the he must stay in Transylvannia forever as a werewolf.
WB's treats that era like garbage, they'll just do the same as they did with Curse of the 13th Ghost and it's full of lies. And what's even more annoying is that there's not as much people who would want a positive change for that. There's no hope for a positive change for that era as long as WB's owns Scooby.