Yeah, I have to admit: figuring out the amount of time the player has to select the shapeshifter was a tad difficult for me. I settled on an amount of time that was challenging but not impossible. Likewise, I also had to settle on not varying the amount of change between items as much as I had wanted. Had I had more time, I probably would have implemented either 2 difficulties or 2 separate game modes: one being slower-paced and more relaxing and the other being fast-paced and more challenging.
Also, I hadn't thought of adding moving spaceshifters into the mix of possible differences so I'm writing that one down right now. Good Idea!
Thank you very much for the feedback!