Hey, thank you!
In fact, areas do change (in the brightly lit hallway you enter the new zone) and the scoring system accounts that you enter the new area, but I must admit I didn't do a great job explaining that to the player.
It's a lesson for the next time.
Edit: Now that I reread your comment, I see you thought of changing areas over time. Yep, that would be a cool concept, could see the game evolving in that way.