I love problem solving like this but I don’t know if I could ever confidently and comfortably feel like I was making a contribution with play testing. Even if it’s rudimentary recommendations. It’s also the reason I don’t write a game; I don’t think I have anything worth adding.
Big reason I didn’t sign on despite really wanting to see what you’re working on. I think you’ve got a great group of people looking at your stuff, yourself included. It helps being slightly self-deprecating, me thinks. 😉