I think the new Customizable killstreaks look cool. For a 3-Killstreak you get a Explosive RC car to drive around in, and get to run to people with it to set the explosive off. And I think you could get a UAV for a 3-Killstreak also. For a 4-Killstreak you get a Care Package. For a 5-Killstreak you get a(n) Ark Angel, which is speculated to be some sort of Predator Missile. An Air strike of some sort is speculated for a 6-Killstreak Like MW2.