Scoob! script doctor
Change the opening scene of the film so that Velma, Daphne and Fred are involved in the background somehow, either as a group of friends or on their own - who witness Shaggy and Scooby’s meeting but don’t officially meet them until the Halloween scene when they become a group.
Set the opening and Halloween scene in the late 90s/early 2000s to better establish that it’s the late 2010s that the movie’s taking place as the Scooby Gang had grown up throughout the 2000s, much like most of us milennials and kids who’d be watching Scoob!
Axe the Simon Cowell nonsense. Show the new and improved Scooby gang trying to get their business legitimized and their mysteries taken seriously, but no investors are interested and (unlike the original and spin off series) the cops aren’t fond of these now-adults doing vigilante work catching criminals. Whilr Fred, Velma, and Daphne are bummed about it, Scooby and Shaggy are just optimistic and take the time to value their friendship by driving them to the bowling alley. That’s where the robots can attack all five members of the gang and meet Dick Dastardly, who tries to capture Scooby but fails. Scooby and Shaggy are captured by the Blue Falcon while Daphne, Fred and Velma escape in the mystery machine then decide on their own to pursue Dick.
Let Dinomutt keep his doofy voice. He can still be competent and look badass. That he be that competent and sassy while sounding like that would make him all the more hilarious.
Make it that the robot army Dastardly has under his power are, in fact, not his creation, but that he stole them from the Blue Falcon’s industries.
to coincide with the above ^^^^, establish that the new Blue Falcon, Brian, is pursuing Dick for this reason and is even fine with using Scooby and Shaggy as a lure to get Dick where they want him. Naturally, the plan capsizes when Dick does manages to capture Shaggy and use him as ransom to get to Scooby, who takes up the superhero look solely to find his friend.
When they reach the mountain of Messick, have the Blue Falcon gang initially leave Scoob alone while they search for the skull, but have it so they’re ambushed by an in-character Captain Caveman who overwhelms the superheroes, only for Scooby to arrive with the mystery machine and Dick Dastardly disguising as Fred.
Shaggy and Scoob are more than ready to sacrifice their stay on earth in order to close the portal, but have it be that Brian steps in instead to truly prove himself a superhero. He legit sacrifices himself for Dinomutt and his father’s enterprise.
In the wrap-around ending, show the abused sweeper-robot Daphne had befriended getting an upgrade by Blue Falcon industries to be his own machine from now on; they make him look like a smaller, puppy-version of Scooby and dub their new member of the team (who still can’t completely talk) Scrappy Doo.
I too hate Scrappy Doo. So does everyone else. However, I’m for improving upon mistakes, which Hannah Barbara CAN do if they want - see Mystery Incorporated. Besides, the robot minions in the movie really didn’t fit in or feel like Hannah Barbara characters. It’d be cool to reinvent an old character into someone useful and actually cute.
