As it stands, the majority of the earthlings behave the exact same way. Run straight at the player, and that's it. What I'm suggesting is more or less making sense of the earthlings behavior based on their character.

Example: The texting dude wouldn't just b-line for the player but instead try and stagger into the players side.

Example: having the boogie men be completely invisible so they can ambush the player when in range.

More stuff like this would just be a welcomed edition to an already enjoyable game.

(Making the original earthlings act like they did in the first game would be a nice touch too.)