Hi guys, sorry it took me so long to reply, I have been away from my primary computer for a couple nights.
All my primary progression has been on my rogue.
Although in Wrath I did have a resto shaman and shadow priest that raided in heroic ICC.
And in Cataclysm I had a prot warrior who I went 2/8 heroic.
The main reason I have stayed on my rogue throughout WoW is that I love the all out damage on can provide. To be honest it is also the class I have spent the most time playing and am most comfortable with.
As for Raer's questions: I actually was assassination for a majority of my guild's progression. I only just obtained the Thunderforged fist weapon off of Consorts giving me overall higher DPS as combat.
As for my opener, I generally used a stealthed ambush into a Slice n Dice (With the set bonus this will give an SnD of 24 seconds, I feel trying to open with a 5 point SnD is a slow way to start) I will then revealing strike, and SS into a rupture (Due to set bonus) and evisc as much as possible while keeping all dots/debuffs rolling.
While Mut I generally opened with Ambush immeditaly into Slice and Dice. (Since Evisc will refresh even a 2point SnD to its 5/6 point maximum).
As for Leeching poison/ Elusiveness - I pick leeching poison for most fights that we feel are farm content to heal myself so healers can focus on other targets (I know to stay out of fire lol). And during progression, where things may kill us quicker I tend to pick either elusiveness or Cheat Death.
Some examples of my abilities that I have utilised to help out my guild:
Jin'rokh: Cloak to immune myself BEFORE immunization goes out to reduce time spent on dispelling ppl and continuing DPS on boss. AS well as keeping feint up during thunderstorm to reduce healer strain (I also am able to dodge those pesky lightning balls and continue DPS on boss.
Horridon: When I was assassination I would spec into Marked for Death for quicker bursts/more ruptures on multiple targets. For combat I would pool CDs for high priority targets (Venom priests on second door) and during this time would also pop Blade Flurry to kill larger groups (We would kite doors 2 and 3 as a group, and I would get maximum BF targets).
Ji-Kun: I would go down for nests 1,7(same nest as 1), and go up for nest 10 (The time when 2 nests spawn at the same time). I would also pop Smoke bomb on tanks during quills as well as evasion to reduce healer strain
Nest 1 I would save CDs until I got maximum stacks of the primal nutrient buff (although I could use Killing spree and have it back up in time for the max stacks)
Nest 7 I would anticipate the nest and already be down Cleaving the adds before the food even came out, by the time the nest group arrived we could kill the fledglings, grab our feathers and fly up in time to get the food as it traveled down.
Nest 10 By the time I would be at this nest all my CDs would be up and I could effectively solo this nest without the assistance of anyone else. allowing more DPS uptime on ji-Kun.
Logs:
Heroic Jinrokh Combat: http://www.worldoflogs.com/reports/rt-qym7cowb3yigg4qs/details/4/?s=4259&e=4538
Heroic Horridon Assassination: http://www.worldoflogs.com/reports/e39hwmt7147k6rbu/details/23/?s=5342&e=6000
Normal Iron Qon Combat: http://www.worldoflogs.com/reports/rt-m9eyo8qh1rok598m/details/0/?s=11801&e=12265
If there are any other questions plz dont hesitate to ask!!