Canny Observer: Limited to hearing the details of a conversation of finding hidden doors. Piece of shit, might as well get Skill Focus. It's got a large bonus after 10th (+6, and only 1 less before that) and applies to ALL Perception checks, most significantly the important ones, like to see people sneaking towards you.
Combat trick: Decent.
Fast Picks: Will never matter. Ever.
Fast Stealth: Okay. +5 situational bonus on Stealth (essentially) is good sometimes I guess.
Finesse Rogue: Okay if you're a Dex Rogue.
Follow Clues: You can use Survival! Yay?
Quick Disguise: If you have a minute to fiddle with your appearance, you'll have a few more. With how rarely Disguise comes up (I've NEVER seen it used, especially when a Hat of Disguise is so damn cheap), it's a worthless Talent.
Sniper's Eye: Decent if you're a ranged Rogue.
Trap Spotter: Pretty good if you forget to say "I search for traps" often enough.
Weapon Training: Gain Weapon Focus. Decent. But again, it's you using your class feature to get a Feat.
Note that literally every other class with a feature like this can consider "Extra X" to be a good Feat investment, because they're actually worth having. Extra Rogue Talent is the Feat you take when you feel like smashing yourself in the kneecaps with a hammer because you weren't feeling crippled enough playing a Rogue to begin with.
Rest of 'em don't count because they're Ninja Tricks. Ninja Tricks are actually useful.
Now, as I said, there are a few Talents that are useful.
The ones that grant Feats are at least worthwhile. Minor/Major Magic into Dispelling Strike is alright.
But for the most part? Nah. They sound good until you read the fine print (which puts ludicrous restrictions or a 1/day usage limit on them), but after that not so much.
