Was curious about opinions on the ever present question that hits restorers of everything, including pins: What do you do with a less desirable/valuable game that is incomplete but otherwise in decent restorable shape? Say it's missing something significant like a backglass that is difficult, impossible, or expensive to find. What do you do with the machine?

Thanks for the input so far. I was leaning towards two ideas already expressed here: I wanted to repurpose the playfield into an illuminated wallhanger, and then save the rest for parts. I have other machines from the same year of production and same manufacturer (Williams) that would certainly have commonality of many parts.

It's a Williams Casanova with missing backglass. And lock down bar, but that's not a problem.

It's a bit of both. I don't think this machine is particularly desirable or valuable (despite the unusual bagatelle in the head). If the backglass was there and decent, I wouldn't even think of this as a potential parts machine. I'll put massive time and effort to save a machine and have done it many times in the past, and thoroughly enjoy that part of the hobby, but the question is wider. I've come across other less desirable (often non-big three EM manufacturer) machines that are missing the backglass and no one is reproducing one for the particular machine. What happens to those machines? And, if I could find a backglass for the Casanova and it was $300, would I do it? Not sure.