Quoted from bobukcat:
I want to see one of these installed in person. Most of my pf is pretty nice because it was factory (or operator early on) mylared but the standard wear is there between the flippers and most of the inserts look like they are as old as they are. Seems like unless I also replaced all the inserts I'd still have that problem even with the hardtop so I don't think it would be worth the effort as opposed to buying a NOS or repro PF and doing a full swap.
I would never hardtop a nice, restorable playfield. It would be a shame to peel the mylar and sand off all that nice artwork underneath. In your case I would either restore it or swap it and sell the original.