Interesting perspective. I CBW, too. Like everyone here, we are all really playing a guessing game with what few facts we have. My thoughts on your thoughts:
1) I realize the murders didn’t happen at the university, but if you truly don’t know the direction of escape or even approach of the killer, you center the crime scene in the square or circle and work your way out. Because the crime scene in their radius is located in the northern most section of their search area, it tells me they know the killer likely headed south after the attacks. This may have been because he was disposing of evidence or he was truly leaving town.
2) I think they did have camera footage from Wasankari or one of the other businesses in that area. That’s the point I was trying to make. It was LE who said that it was W Palouse River Dr that was the southern boundary. They would have squared off their own graphic using the boundaries they provided to make the square search area. Or they could have not given specific boundaries and simply just said, “Please. Take a look at this map and if you have any footage or unusual activity here between 3:00 am and 6:00 am please report it.”
I think LE is pointing us in a direction. “If you want to help us, don’t bother looking there. Look here.”
JMHO