VSAT replaces UAV if you believe you can earn it consistently.
Lodestars and above kick major ass, but in practice all they really do is make people ragequit, so they're overkill in many cases. HK, in practice, love to get double kills and buzzkills. UAV, even against ghost, gets you assist points. LS remains one of the most efficient killstreaks of all time, behind maybe the harrier and blackbird.
Sentry gun and guardian should only be used against really bad players, as anyone with half a brain would keep EMP nades on their default classes.
Running EMP is pretty bad because, well, if you can earn them to begin with, the opposing team isn't gonna get much up for you to counter. That, and EMP nades do pretty much the same thing against almost everything.
Have to agree with this, with an additional nod to the AGR.
I play a lot of Hardpoint and I think that a VSAT can win the game. And if you get two, yeah, it's pretty much over. Lightning Strikes are awesome for clearing Hardpoints too. UAV-Hellstorm Missile-Lightning Strike is good too if you want easier scorestreaks. And Counter UAV is always a solid option too.
I love calling in as many UAVs as possible too, it's just a solid choice that's so easy to get. I think two Defends and a Capture and you have a UAV in Hardpoint.