Yep driving pressures are very important because they are responsible for the opening and closing of the alveoli---essentially they are to blame for atelectrauma that leads to acute lung injury. Very much the reason why I advocate for much higher PEEPs in adult patients. I'm not so sure the literature is there for pediatrics; I'll have to do more research. But driving pressures are basically your plateau minus Peep... the degree of opening and shutting of those alveoli.
"A PEEP of 10 is the new PEEP of 5" - some unknown intensivist i heard in a podcast.