>>231596
Fred will continue to be white, but he'll swing both ways and eventually date a trans girl. Ex boyfriends will appear from time to time to remind you that he's bisexual.
Daphne will be completely replaced with a black girl who will be one of the writers self-insert. There's 50% chances of her being the trans girl Fred eventually dates.
Velma will be Indian and make constant TBBT-tier "geek gamer" jokes. However, she won't be the "brain" of the group (the new black girl will be) and instead her character will be more focused on the use of gadgets.
Shaggy won't be a compulsive eater anymore. Instead, he'll be a stoner (Scooby-Doo will no longer be targeted at children, so it's ok to show drug consumption) and the "Shaggy blanco" meme will become canon and occasionally the key to save the group from danger.
Scooby will remain the same.