While I'm not surprised to see a pacman reversal, I am absolutely blown away by the idea on execution. I love this mini-RTS approach, and how much the pellets and power pellets communicate on your hunt. Giving each ghost unique sight and movement only solidifies this really excellent experience.
I would recommend putting a limit on the frequency of pauses; I did find a cheese-solution in just spamming the pause button to give me near perfect responses to pacman's movements. Either a pause cooldown or a limited resource pool of pauses would go a long way.