Quoted from Diospinball:

Don't forget Deadly Weapon. Only needed to change one word for that pinball and it was off to the races.
But, Bally skirted the rights a few time with Attack From Mars, and Medieval Madness. If done right you can make a pinball around a popular theme or concept and make it actually better as its your own IP and you're only hamstrung by your own ideas and the assets that you make.
Don't hate me. But, while I think there is a lot of cool stuff going on in stranger things. I know I will never buy one. At least not anytime within the next 6-10 years. I rather own MM and AFM and possibly a Shadow before I buy a Stranger Things. But, I think the mag bull lock is cool. I like the bash toy, and the projector idea looks to be promising. And I like some of the animations for the game. Mainly the extra ball animation. Yes, I know its just a callback to AFM, but its still awesome.
I work as a computer tech for school districts however. And we have a projector in every classroom, and in offices, auditoriums, and media centers. Bulb life is around 4k-8k hours. But, these bulbs are expensive!!!!
Its also possible to have more than a few dudes. Again we have about 1k projectors. So we get more than a few lemons. Also. With the shaking of the game, the focus and mounting could very well become an issue.
Then lastly heat consumption. These bulbs get very hot. So... Where is it housed. Will it cos plastics to warp if any are near it. What about overheating any boards that are near it.
What about the fan noise for the projector unit.
How easy/hard will the bulb be to replace. If this is a custom projector. How long will stern carry replacement parts for it.
I'm not dumping on there idea. Brian Eddy has forgotten more about pinball design, then I'll EVER know. I'm just saying... Those are things that worry me a little bit. And sure the 1,500 dollar projector that my district uses are not the same that stern will be using...
Sorry about my weird tangents... Its late and I probably should go to bed.