I had an idea for a way to make rogues more viable, but I realized it wouldn't be quite feasible on a normal rogue. As such, I figured an archetype would help that.
Street Fighter:
Combat Pragmatist: At second level, a Street Fighter gains Agile Manuevers as a bonus feat. This ability replaces evasion.
Guileful Fighter: At third level, a Street Fighter gains a +1 bonus to CMB and CMD. This bonus rises to +2 when the Street Fighter reaches 6th level, to +3 when she reaches 9th level, to +4 when she reaches 12th level, to +5 at 15th, and to +6 at 18th level. This ability replaces Trap Sense.
The following rogue talents complement the Street Fighter: Underhanded Tactics, Combat Swipe, Bleeding Attack, Underhanded, and Powerful Sneak
The following advanced rogue talents complement the Street Fighter: Improved Underhanded Tactics, Opportunist, and Deadly Sneak
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New Talents:
Underhanded Tactics (Ex): At second level, a rogue gains the Improved Dirty Fighting feat, even if she does not qualify for the prerequisites. In addition, if she is flanking the target, or the target is denied its Dexterity bonus to AC, the condition lasts an extra round, and removing the condition requires the target to take a standard action.
Improved Underhanded Tactics (Ex):
Prerequisites: Advanced Talents, Underhanded Tactics.
At 8th level, a rogue gains the Greater Dirty Fighting feat, even if she does not qualify for the prerequisites. In addition, if she is flanking the target, or the target is denied it's Dexterity bonus to AC, the rogue deals 1 damage to the target for each d6 of sneak attack damage she has, and removing the condition requires the target to spend a Full-round action.
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Essentially, I feel the Dirty Trick maneuver is very flavorful for the rogue, and is just a fun ability to use, but Rogues as written suck pretty bad at it. For a rogue to be even decent at it, they'd need three feats: Agile Maneuvers, Combat Expertise and Improved Dirty Trick, and even then, since they're 3/4 BAB, they still lose out over time.
In addition, sneak-attack just gets better with level, so it becomes a case of increasing opportunity cost for diminishing rewards, so I added a bonus to each talent that makes them feasible even when the rogue could choose to Sneak Attack instead.
I'm not particularly familiar with rogues in PF, though. I've only seen one in my experience, since Rogues' loss of their Niche Protection (a move that I don't disagree with, but one that should have been met by a broadening of rogues' abilities, to make them still feasible) means usually the role can be filled by an archaeologist Bard or the like. As such, I'm can't entirely gauge whether this is decently balanced, so I'm asking for feedback.
It's probably balanced compared to the normal stock rogue (though loss of evasion is a bit rough). But it's still very weak compared to other classes.
How would it match up if it kept evasion, and gained Agile Maneuvers a third level, then a bonus to CMB/CMD every three levels after (+1 at 6, +2 at 9, ect)?
That's actually a good call. Trap sense for cmb/d buff? Yes please!