If the makers of Mw3 are going back to cod 4 basics with a more gun on gun feeling, then I would prefer it if they would go back to basics with the killstreaks.
1. A simple Uav or counter uav at 3 kills.
2. An airstrike or mortar strike at 5.
3. A helicopter or wart-hog support at 7. Note the warthog will fly around the map not hover like the harrier of mw2.