Well, IMHO, i wouldn't put in Jugga, cause, ppl hate it. Last Stand is the same, Marty, i'd say leave it as a deathstreak.. That way people don't complain of dying everytime their opponent dies, because of Marty. And there should be a way to make the airstrike 5 kills, maybe put an extra "sideperk" and have Hardline there. But, then you'd have to modify the other kill streak stuff. I'd help you code it if i knew how, but currently, I am waiting for school to go back in to learn more about coding.
I like your idea aswell.