Compared to 3.5, the pathfinder rogue version is much more versitile when it comes to combat. Sure, they are still skill monkeys but with a d8 instead of a d6 they are a little more robust and the sneak attack ability to arbitrarily add 1d6+ dice damage from a single attack isn't too shabby. Add rogue talents that allow the character to gain additional combat feats or ability to cast arcane spells I think they could be somewhat of a threat. Other than the bard, the class is probably one of the closest to a jack of all trades type class.Really? Granted a rogue's got Evasion, but "definitely a threat???" Most of what a rogue can do can be performed by most any class. Nobody in our group will even play a rogue - better to be an urban ranger, or someone who as a real AC and chance to hit things. Anybody can take disable device, and half the other classes has trapfinding as an option. Most people agree that a PF rogue is a pretty useless thing. Its better to be a ninja.
Although it's 3PP, the best "sniper" in the game is a Samurai (yabusame archetype) .
Compared to 3.5, the pathfinder rogue version is much more versitile when it comes to combat. Sure, they are still skill monkeys but with a d8 instead of a d6 they are a little more robust and the sneak attack ability to arbitrarily add 1d6+ dice damage from a single attack isn't too shabby. Add rogue talents that allow the character to gain additional combat feats or ability to cast arcane spells I think they could be somewhat of a threat. Other than the bard, the class is probably one of the closest to a jack of all trades type class.
Ninja = eastern rogue.
Also, although standing up is a free action on the rogues part, it does provoke attacks of opportunity. Just have a few opponents sneak up or appear behind him when he decides to do the pop up and fire routine.
A few quick relevant items...
Free Action
Free actions consume a very small amount of time and effort. You can perform one or more free actions while taking another action normally. However, there are reasonable limits on what you can really do for free, as decided by the GM.
Attacks of Opportunity
Generally, if you cast a spell, you provoke attacks of opportunity from threatening enemies. If you take damage from an attack of opportunity, you must make a concentration check (DC 10 + points of damage taken + the spell's level) or lose the spell. Spells that require only a free action to cast don't provoke attacks of opportunity.
Free Actions
Free actions don't take any time at all, though there may be limits to the number of free actions you can perform in a turn. Free actions rarely incur attacks of opportunity.
My ruling would be to permit the action, and that getting up from prone does provoke an attack of opportunity. Also, when prone, evasion does not apply.
This appears to be within the rules as far as I can tell!
Lay on his stomach, jump up, shoot arrows, hit the deck, nobody saw who dun it!
Stand Up (Ex): A rogue with this ability can stand up from a prone position as a free action. This still provokes attacks of opportunity for standing up while threatened by a foe.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.