Yet another wondrous(ly dumb) idea. A sniping style, you can learn from finding a military book on sniping. It would have recipes for helmet netting and Ghillie suit, but only teaches the style. Might also need some sort of conversion kit for adding ghili features to power armour and survivor armour, if you want.
The style would include basic self defense and pistol/smg use, and quieter movement tactics, but would focus mainly on rifles and concealment. Mainly, trading speed and mobility for faster/more efficient aiming and recoil mitigation.
The style could be based on perception and minor dex, and use the marksmanship or rifles skill.
I’m not too good at coming up with equations, so I’m just going to be vague in the hope that someone who’s a lot better at game balance can come up with something intelligent.
marksmanship (or rifles)
rank 1: You have a chance based on your perception and dex to move quieter, regardless of your terrain/surroundings. You have basic block, and +1 dodge while wielding a knife.
rank 2: Your speed at precise aiming with pistols and smgs is buffed by your perception and minorly by your dex.
rank 3: While wearing helmet netting and a Gilli suit, whenever you stand still next to furniture or walls or wilderness terrain features for more than a few turns, you temp gain the innocuous trait and have a less strong scent. You also get +2 dodge instead of +1 dodge while wielding a knife.
rank 4: The rank 2 bonus applies to rifles now, and on top of that, if you’re in the hiding state from rank 3 and holding a rifle, you can “support your rifle on the terrain” while aiming to use your perception and dex to reduce your dispersion and recoil. While doing this though, it’s very difficult to defend from melee attacks and you get a temp debuff to your dodge and melee skills inverse to how much of a bonus you’re getting for aiming. (If there’s a way to check if you’re shooting over the object as opposed to shooting away from it, then that would be a useful check to use here.)
rank 5: While wearing a Ghili suit and helmet netting, you move silently through stuff that would normally cause noise (like bushes), and your dodge bonus tops out at +3 while holding a knife. You also gain a bonus to view range when you have binoculars.
rank 6: You can use the rank 4 stabilization mode even without being next to terrain features or buildings or whatnot, but you get half the benefit unless you actually go and stabilize next to something. This is an approximation of the sitting sniper stance,
aka: http://www.angelfire.com/rebellion/judgementstrikes/snip2.jpg
http://www.army.mil/e2/-images/2010/10/19/89082/size0-army.mil-89082-2010-11-01-111147.jpg
Rank 7: While wearing a Ghili suit and helmet netting, if you spend an ingame half hour in the rank 3 state while wielding a rifle and without getting attacked and hit, the first shot you make has an incredible accuracy and crit rating. This bonus resets after the first shot. You also gain +4 dodge while wielding a knife.