I can agree they need to be easier than in MW3. The problem for me was also buildings, that map that even a deity would puke over (Downturd).
make three different uav killstreaks. the 3 to 5 scorestreak uav only works for the player who called it in, A 7 to 9 uav scorestreak uav works for the whole team and finally the advanced uav from mw3. also bring back blind eyes ability to lock on quicker. maybe even have a rocket launcher where you just have to fire in the air and it would track down the killstreaks itselve.(maybe scoretreak) just my ideas
And when holding a launcher for destroying a scorestreaks. You should not show up on the radar when you've ghost or similair perk on. (not when holding a launcher with and not aiming up)