Quoted from solarvalue:
I think pinball manufacturers will have to start using adhesive PETG sheets with the artwork applied to the back, similar to the hardtops. With ghosting, chipping and pooling of clearcoats, stricter environmental regulations and the extra scrutiny the playfields are getting when bought for the home, the need to replace playfields is going to get more and more common. At some point it just won't be worth it anymore.
I’ve been thinking the same thing, the hardtop seems like a great solution to me.