It's pretty moot to form strategy on a game that isn't even released, but I figure some valuable discussion could come out of this.
I've been theorizing as to what the most advantageous set-up would be as an aggressive sniper.
Killstreaks:
-UAV (3)
-Counter UAV (4)
-Blackbird (8 )
L96A1
Revolver
Semtex
Stun Grenade
-Ghost
-Hardened
-Ninja
Pretty self-explanatory; stealth mixed with the brutality of a sniper.
Here's another option I've been considering, that may prove more valuable than the latter for one specific combination: Hardline + Counter UAV.
Killstreaks:
-UAV (2)
-Counter UAV (3)
-Blackbird (7)
L96A1
Revolver
Semtex
Stun Grenade
-Hardline
-Hardened
-Marathon
Getting 3 kills is no issue at all for anyone with even average skill. With counter UAV up, the greatest advantage of Ghost is lost (albeit for 30s), but that 30s is easily enough time for another 2-4 kills for the Blackbird killstreak. I'll definitely have both classes to choose from but at the moment, the Hardline + Counter UAV combo seems like the king. As always, shit is situational.