The problem is, I'm a verbose writer and can trivially churn out 4 paragraphs - another person is going to struggle. The friction is targeting the wrong area: this is a 15 minute break for me, and an hour long nightmare for my dyslexic co-worker.

Social media will give you a good idea what sort of person enjoys writing 4 paragraphs when something goes wrong; do you really want to incentivize that?