Grizzlefoot
Legend
Preferably horde-only, but I'll take any I can get, trying to see what the consensus is between max agility and max crit gearing. Tyvm in advance! 
The main reason you want dagger off hand is for poison application,
Since poison is based of of a percentage,
the more attacks you get(daggers attack the fastest) on the target the higher rate of application of your poisons.
Sub generally has higher burst than assassination, but terrible damage out of stealth. Assassination is great for sustaining damage on a target.
Subterfuge combat rogue has probably the best rogue burst though, and pretty decent sustained damage especially if geared glass cannon like the one in my signature (if you decide to check it and I'm wearing daggers instead of a MH sword, it's because I have daggers macro'd to my stealth macro for higher ambushes.)
I'm kinda interested in dagger combat rogue with subterfuge
seems kind of interesting because you can come out of stealth with 4 combo points from ambushes
then use revealing strike then evis with 5 combo points
I'm have to test this when servers come back up
/equip whateverweaponyouwantpost macro plz