Let’s face it, dialogue can be a pain. Too often characters are let down by poorly constructed dialogue that makes them sound forced. But in visual mediums, comics especially, even great dialogue can be let down by the presentation of the scene.
The last thing you want is a repeat of the same two panels as characters talk back and forth. No matter how good the dialogue is, the stagnant art direction will have readers skipping to the next page. And anything that causes readers to skip is a cardinal sin in writing.