Two things:
1: Have you respec'd already? And if so where are you going to put that Decimation: Chance for Build up...if anywhere? Is Aimed Shot vital to you (I think it is, I've seen you pull)...if it wasn't I'd snag the quick shot and put the Decimation there for spammage. Wait....you're a trapper and a mastermind. How does Build-up help you? I'm sure it does but it just occurred to me I'm unclear how it would exactly.
2: That slot from Tactics that I mentioned this morning? I'd totally move it over to Teleport Foe if you really want to play with it. Billy has that ability and he's got it slotted for Accuracy and it still misses like a blind drunk playing basketball in the dark. When it works...it's awesome though. Next time I respec I'm thinking of fully slotting it just so I can throw in a bunch of range and recharge in there as well. But it needs slotting to rock in the way you want it to.
See you soon, with candy.
-jared
Well the Decimation: Chance just does not help me right now. I could see a scrapper or brute, or ranged attack player (corru) using it usefully. I was better off with a "range" IO in there to pull from a bit of distance 
.
I have three set bonus accuracy of nine 9% percent right now to my "powers". Does this mean my ninja's have a base 27% accu bonus because they are my "powers"? With the three stacked accuracy bonus's and Tactics, I expect TP Foe to hit a few times. I may pop a yellow. We'll see on that one. I kinda want to keep Tactics three slotted. In case I choose to get Acrobatics, running all the toggles I think Ill need to. Its worth it to me to get a toggle or two "drain free".
TP Foe, range and Accu. Ill probably respec tonite with a screenie or two of my current build at hand.
I hope Im not forced to sell that build up. I can think of a few brutes..
Your:
Private Dancer
Oh dear God, I forgot about the Accuracy set bonus thing. I'd still throw at least one in there. My Dom has a 36% accuracy bonus to all powers and has TP slotted with accuracy (once) and I still miss far more often than I would like. Then again, maybe I need to stop targetting the Dodge-crazy Scrapper so often. I'm not sure.
Oh and damn you. Now I have to hold onto that Decimation: Chance for Build up on my brute until level 41 when he gets a Ranged Patron power attack. I wasn't even THINKING of patron powers until you said that. Damn it.
-jared
Hello. Your Private Dancer here. Just wanted to share my current setup so far with "8ngaHroSndwch", my Ninja/Trap MM.
Call Genin: Complete Set Blood Mandate
Aimed Shot: Decimation/chance for buildup (oops i wasted it)
Train Ninjas': IO Endurance Reduction
Call Jounin: Complete Set(4) Unquestioning Loyalty, Two Slot Commanding Presence for Taunt Placate Resist and recovery Bonus
Call Oni: Four Slot "Edict of The Master" Two Slot Commanding Presence for Taunt and Placate Resist and Recover y Bonus
Kuji in Zen: IO Endurance Reduction
======TRAPS=====
Web Nade' : Complete Set:Trap of the Hunter
Caltrops: Complete Set: Pacing of the Turtle
Acid Mortar: Two Slot Positrons Blast(recovery) One Slot IO Defense Debuff Three Slot Recharge Reduction
FFG: Three Slots: Red Fortune Set (defense bonus based) and will likely slot it more to complete set
Poison Trap: Two Slot "Paralytic" Hold set(recovery) One Slot IO Hold Duration Three Slot Recharge Reduction
Trip Mine: Four Slot Positrons Blast (9% accu bonus there) One Slot IO Endurance Reduction
Seeker Drones: Two Slot IO Set " Stupify" for recovery and later on the ranged defense bonus in complete set
Medicine Pool:
Aid Other: Three Slot IO set "Miracle" for recovery One Slot Decrease Interupt Time
Aid Self: Three Slot IO set "Miracle" (stack it baybee) Two Slot Decrease Interupt Time
Leadership Pool:
Manuvers: Two Slot Endurance Reduction(will respec out soon for Assualt)
Tactics: Three Slot Endurance Reduction
MACE MASTERY:
WEB Envelope: Two Slot IO Set "Trap of the Hunter"(to be completed) One Slot IO Recharge Reduction One Slot Immobilize
LEAPING:
Combat Jump: One Slot IO Set"Red Fortune" (to be replaced)
Super Jump: One Slot Endurance Reduction
Fitness Pool:
Hurdle: One Slot Jump ( to be respec'ed out soon for TP foe)
Well thats my build and slotting so far at lvl 43.Apoligize if this was hard to read. Im going for defense and stacked set bonus's, and its working so far. Next Im going to Sirens to try to farm the Status Protection Set Bonus.
Having Taunt and Placate Resist stacked helps a lot in PvP against brutes and stalkers. The ranged and AoE defense totally helps in pvp and just hopping around in Grandville.
Now, Im really thinking about trying to snag some badges for accolades. A MM with accolades and set bonus's for PvP. MM Im getting Hungry for a sandwich!
Special Thanks to all who were on team last night in Recluse on Union. It was sheer pwnage so badly! Loved it!
Your:
Private Dancer