I wonder what it’d be about. Maybe it’ll have Scooby doing something away from his crew and he’s teaming up with Spike to find Tyke, and Tom and Jerry are just doing their regular chase routine on the side.
I mean, why not? They're by and large HB's most popular and recognizable properties these days and it's not like it'd make less sense than them crossing over with the WWE, Batman, Kiss, Supernatural, Willy Wonka, Wizard of Oz, Johnny Quest, Robin Hood, Sherlock Holmes, the WWE again, and so forth.
Plus it'd be nice for each side of their respective crossover be on an equal playing field for once. I imagine they'd be a lot looser with Scooby interacting Tom and Jerry than Dorthy or Johnny Quest which both where very bland and barely interacted with T&J at all in their respective crossovers
Would have been nice to have more H&B characters crossing over again, the past ones were fun. Scooby and the gang have met alot of of people and it would be more original than Tom and Jerry being inserted into other movie from Warner Bros. past.