What if William Hanna and Joseph Barbera worked for Warner Bros. after leaving MGM and retained the rights for Tom and Jerry/Hey There, It's Yogi Bear!

Hey There, It's Yogi Bear! is a 1964 American animated musical comedy film with a compilation of classic Warner Bros. cartoon shorts and newly animated bridging sequences starring Yogi Bear. It is produced by Warner Bros. Cartoons and released by Warner Bros. Pictures. The film stars the voices of Daws Butler, Don Messick, Julie Bennett, Mel Blanc, and J. Pat O'Malley. Hey There, It's Yogi Bear!, with its combination of classic animated footage along with new animation would become the template for another theatrically released Looney Tunes movies until Daffy Duck's Quackbusters released in 1988.