I really hope Aldriana comes in here and states something different from what I have found but here we go...
Gemming As stated towards the beginning of the thread, the best set-up is socketing is as follows...
Red = +20 Agi
Yellow = +10 Agi +10 Haste
Blue = +10 Agi +10 Hit
Enchanting The changes for enchants on your items are as follows...
Boots = +16 Agi
Hands = +20 Agi
Cloak = +22 Agi
Everything else can remain the same...I have not tried Mongoose yet on my daggers but i haven't seen much information on this compared to beserking. Maybe in the near future i will have more information for you guys.
Reforging For high gear scores and optimal set-ups i have done the following. Any items with...
Crit --> Hit /// Crit --> Haste
Depending on Hit Rating changing...
Hit --> Haste
Testing I just completed a full hour of test with my friend from Gentlemens Club you guys can armory his gear
The World of Warcraft Armory - Zn @ Korgath - Profile
We have found that the teir [(helm + pants) + (Cultist Shoulders + Aldriana's Gloves)] Have produced the highest average dps over these combinations...
Note:With his set-up and always having Ikfirus's Sack of Wonder
It is better than.. 4/4 Tier pieces, Cultist + Geistlords w/ 2/4 Tier pieces(pants and hands).
Overall:We have found that rogues solo (on dummies) have now had a boost in overall dps. However, in raids (test in ICC 25, TOGC 25) rogues have stayed the same. This is most discouraging and interesting... As our stats have fully increased to almost perfect, while the removal of Dual-Wield Spec and the nerf of raid buffs has kept us at the same page.
He noticed the around the same overall dps on fights such a Saurfang, Festergut, Rotface, Queen. However, noticed that mages, boomkin druids, death knights and warlocks have surpassed his dps by the multiple of thousands.
I hope this information is either countered or corrected. In no way is this BIS slot for mutliate rogues or the best thing to do for them. This was just my time spent to see what works best for what i have at the time. All comments and questions are welcome. Hopefully we can get some more information with spreadsheets and other things to see what is going on with rogues now in the new patch.