Oh man, I thought about Bounty Bars too, or at least I think that's what you're referring to :p
The "character designs" are lovely, and the idea of the thing seems like fun, but I really struggle to get to a point of "feeling" like fun. I think there are some issues that could be addressed:
- The controls are difficult to internalise - games like this are like beat saber or any quicktime event type of game, that means you want to be able to intuitively do an input. Up/down/left/right are the most common type of intuitive inputs, but I guess it doesn't have to be. Imagine if in your game the 4 operations are bound to those around the central machine and the conveyor belt went around instead of straight, for example. An intuitive parsing is so important with games like this.
- The variety of actions needed that are all one-button is both a boon and a curse! Maybe if it were ramped up to a full "orchestra" of different actions over levels or something.
- It would be nice if it were bound to some kind of rhythm. I like the idea of doing factory work to the rhythm of music, that might make it feel good :)