For me, a full playfield protector is like the clear plastic on my grandma's couch. What is the purpose - I guess to add longevity but along the way you have to endure it. For me, I'd rather equate to how most people view classic cars - they buy them to enjoy their original beauty and design, and drive them as original as possible with a grin on their face the whole time. Sure, over time things will wear and possibly damage, but then you always have the rewarding experience of repair and restoration.