For the 'industry trick' part you can get most of the benefit from going 'most of the way'. Ie you get almost the same wiggle room, if 90% of your scenes are without dialogue, and 10% are voiced.

For the artistic effect, there's a big difference between 90% and 100%. (Sparse dialogue is also a perfectly valid artistic choice, but it's doesn't make much sense to analyse it as '90% of a no-dialogue' piece.)

I've mostly come to appreciate 'pantomime' in web comics. Many comics go overboard with text, be that speech bubbles, thought bubble or narration boxes. It's always interesting to me to see an author work out how use the medium to its full advantage, instead of writing a novel.