(regarding wing-tip video cameras) I'm thinking parasitic drag and high costs to company.
How big and how expensive do you think video cameras are these days?
$US 45.00
http://i00.i.aliimg.com/wsphoto/v0/5...-10-5-10-5.jpg
The A380 already has a camera in the tail - unfortunately the field of view doesn't cover the wing tips. Mentioned in the discussion of the similar A380 tail-clipping incident at JFK a year or so back.