I bought a BSD that had a lexan playfield protector on it. Yes it looked nice at first but when I did my over the top clean as I do with all new games I noticed so much dirt,rubber,whatever it was underneath. Too much work removing it to get it right and it’s only going to work it’s way in again. It’s probably not going to bother most but I didn’t like it so sold it. Having said that it did dress up an older games playfield without going the full clearcoat route.
I should note I am extremely fussy and clean my games way too regularly.