Wow! I'm so happy you liked the game and I enjoyed all the theories and overview of your experience!
To answer your questions:
1. In early versions of the game I only had the sections called "Situation 1, 2, & 3)" (no lines about subject A,B, or C used). I added the lines about the subjects to better distinguish each situation as being a different person. Some people were playing the game and thinking that the person from situation 3 was the same as situation 2, and that lead to a lot of confusion during the "reveal". However, it DOES set up the nice potential for future lore haha.
2. If you mean the "pixel-y" look to the game there are many ways to accomplish it. I used a trick with the camera to display a lower resolution image to the player than is typical. Most of my assets are low-poly too so it adds to the effect.