I agree that this playfield begs to be cleaned, waxed, and enjoyed in survivor condition. I've seen a LOT worse that still look great so give it a whirl and see where you land when you've got it all spiffed up.
*Edit* I should have read the description a bit more. If it's not too much of a financial burden then I'd probably get the repro myself, but still try to clean the survivor up and do something with it. Not sure what though.