Quoted from SantaEatsCheese:You will get mixed reactions on this one. I personally have put down mylar on 7 year cured CPR clear coated playfields, but only in specific spots I knew were subject to wear and very carefully. Specifically, I put down mylar around the pops in the Attack From Mars I did a playfield swap on, and in the Stroke of luck. I wouldn't mylar everything.
I agree.
And quality material mylar is almost invisible, and removal is not as hard as original mylars.