About a year old, but this was the draft I made for Deepwood Sniper (as it may contain some ideas worth considering):
Ranger Deepwood Sniper
4AP
Ranger Deepwood Sniper I
Prereqs: Level 6 Ranger, Ranger Hide I, Ranger Move Silently I, Ranger Spot II, One of: Weapon Focus (Ranged), Weapon Focus (Thrown)
Benefit: You begin your training to snipe with a bow. You gain a +2 bonus to Hide, Move Silently, and Spot. You may perform Opening Shots and Sniper Shots.
Ranger Deepwood Sniper: Opening Shot I
If your first offensive action to a creature with a ranged attack it deals 4d6 precision damage. If you perform an opening shot from stealth, it deals an extra 6d6 precision damage.
Ranger Deepwood Sniper: Sniper Shot I
Any ranged attack you do to a creature that is more than 30 feet away from you while you are not moving does 1d6 precision damage, gains a +1 bonus to-hit, and +1 critical multiplier. If you perform a sniper shot from stealth, it has +2 critical threat range.
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2AP
Ranger Deepwood Sniper II
Prereqs: Level 12 Ranger, Ranger Deepwood Sniper I, Ranger Spot III, One of: Ranger Move Silently II, Ranger Hide II, Least Dragonmark of Shadow, Stealthy, Elven Ranged Attack I
Benefit: You find yourself able to snipe far off targets with ease. You gain another +2 bonus to Hide, Move Silently, and Spot. Your Opening Shots and Sniper Shots improve.
Ranger Deepwood Sniper: Opening Shot II
If your first offensive action to a creature with a ranged attack it deals 7d6 precision damage. If you perform an opening shot from stealth, it deals an extra 12d6 precision damage.
Ranger Deepwood Sniper: Sniper Shot II
Any ranged attack you do to a creature that is more than 30 feet away from you while you are not moving does 2d6 precision damage, gains a +2 bonus to-hit, and +1 critical multiplier. If you perform a sniper shot from stealth, it has +3 critical threat range.
1AP
Ranger Deepwood Sniper: Called Shot
Prereqs: Level 12 Ranger, Ranger Deepwood Sniper II, One of: Improved Critical (Ranged), Improved Critical (Thrown)
(Ranged Attack, 10 second cooldown, variable duration, single enemy effect)
Benefit: You gain the ability to debilitate your opponent with your Sniper Shots. A Called Shot must meet the requirements of a Sniper Shot and is fired at a -4 to-hit penalty. Depending on where the opponent is hit and if it is a critical hit determines the malady and severity.
Called Shot: Headshot
This Called Shot will daze the opponent for 6 seconds. On a critical hit the opponent is also stunned (auto-crit form) for 6 seconds and takes an extra x1d6 damage (based on critical multiplier).
Called Shot: Eyes
This Called Shot will blind the opponent for 6 seconds. On a critical hit the opponent is instead blinded for 6d6 seconds and takes an extra x1d6 damage (based on critical multiplier).
Called Shot: Legs
This Called Shot will cripple the opponent for 30 seconds. On a critical hit the opponent is instead severely cripple for 10d6 + 30 seconds and takes an extra x1d6 damage (based on critical multiplier).
Called Shot: Arms
This Called Shot will cause 4 points of STR damage. On a critical hit the opponent instead takes 1d6 + 4 STR damage and takes an extra x1d6 damage (based on critical multiplier).
Called Shot: Body
This Called Shot will cause an extra 2d6 damage. On a critical hit the opponent is instead bleeding for 6d6 seconds (1d3 damage per tick) and takes an extra x2d6 damage (based on critical multiplier).
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2AP
Ranger Deepwood Sniper III
Prereqs: Level 18 Ranger, Ranger Deepwood Sniper II, One of: Ranger Spot IV, Ranger Move Silently IV, Ranger Hide IV, Lesser Dragonmark of Shadow, Stealthy, Elven Ranged Attack II
Benefit: You find yourself able to snipe far off targets with ease. You gain another +2 bonus to Hide, Move Silently, and Spot. Your Opening Shots and Sniper Shots improve.
Ranger Deepwood Sniper: Opening Shot III
If your first offensive action to a creature with a ranged attack it deals 10d6 precision damage. If you perform an opening shot from stealth, it deals an extra 18d6 precision damage.
Ranger Deepwood Sniper: Sniper Shot III
Any ranged attack you do to a creature that is more than 30 feet away from you while you are not moving does 3d6 precision damage, gains a +3 bonus to-hit, and +2 critical multiplier. If you perform a sniper shot from stealth, it has +4 critical threat range.
2AP
Ranger Deepwood Sniper: Slaying Shot
Prereqs: Level 18 Ranger, Ranger Deepwood Sniper III, Favored Attack II
(Ranged Attack, 20 second cooldown, instant duration, single enemy effect)
Benefit: You may perform a Slaying Shot. A Slaying Shot must meet the requirements of a Sniper Shot and is fired at a -8 penalty to-hit. If a Slaying Shot hits, the opponent must make a fortitude save or die. The DC is 10 + Ranger Level + DEX modifier. Slaying Shots only work on your favored enemies.