A new Cartoon Brew article “How Long Should It Take To Draw A [animated TV series] Storyboard Panel?”. The math is here.
“A 25-year veteran of the TV animation industry recently sat down to figure out the average amount of time it takes to draw a board panel. […] an average of 20 minutes, based on a script with equal parts action and acting, and importantly, no revisions.”
It seems that, traditionally, 11 minutes of TV animation took six weeks to fully storyboard for production. Arguably, some children’s animation has generally become much more complex in each shot since the 1990s. Compare Wacky Races with Gravity Falls, for instance. But it appears that, rather than the time worked increasing due to the complexity, it’s actually decreased in the industry.