If you disagree then you are taking advantage of it.
The fact that so many people leave when I call one in is proof and I don't blame them because once its up my higher streaks are pretty much assured so long as I don't do anything stupid, not to mention one of my friends is likely to earn his why its up. Then the cycle begins of keeping them up most of the game and seeing which one of us can rape them the hardest.
You may say its hard to earn but I know full well your rocking Hardline which makes it 7 kills and confirms on KC (less if your smart enough to destroy equipment and have teammates who will share tags when your close) which isn't exactly hard to accomplish for average players never mind pub stars who know the game inside out, use the best set-ups and have a team of equally skilled players watching their backs. Its amazing how many times the enemy team calls one in before I've even died when playing solo.
The only way to really defend it is hiding in a headglitch like a coward but a smart player isn't going to run into that one and he will simply ignore you and you can't exactly stop your teammates running around helplessly to their deaths. Your whole team could go defensive if they were organized but how many parties match up against parties without one pussing out? CUAV may work but you better be psychic and have one ready because there's a phat chance your earning one while its up and there's always the probability of it getting shot down.
The fact is that vSat has no business being lower than the Escort Drone, EMP or even the Warthog. Id go as to say its the most powerful streak in the game and 1500 is the minimum it should get upped to.