Well, I was ready to post a technical description of visual sensor challenges, but Hitman beat me to it. (Thank you sir.
)
Instead, I will just say this.
Neener. Neener. Gotcha.
In all seriousness, the only way to "fix" the visual sensors may be to reintroduce other old problems like the vampire night vision.
Another note on player visual sensors. They are sensitive to the size, speed, and aspect ratio of the object to be spotted. (Just like the enemy AI in many ways) The same player visual sensors are used for all occasions, which also cases some quirks to appear.
We will do what we can to hit a happy medium. No doubt some will be okay with it and others not. Does anyone have some chicken wire and bubblegum that we can borrow? We could also use a harmonica player.