Thanks for the review!
If I had extra time (another day or something), I would absolutely look into implementing more dice and whatnot. (One of the initial concepts was built around D20s...)
The input and output not being visually distinct enough has been a recurring issue, yeah.
The 'devices keep breaking' thing is a bug. I haven't been able to pin down what causes it (although I do have a couple hunches related to how tile breaking is managed), but breaking and replacing the offending tile seems to make it work again... although placing tiles seems to move the issue to other tiles, which usually leads to just rebuilding entire solutions. I didn't have enough time to track it down after finishing making the game's content, unfortunately.
Sorry about the game breaking for you, but I'm glad you still ended up enjoying it!