Why would anyone thank a tank? all they do is hit a button every few seconds and taunt on a few stacks? I'll give you a run down of all SoO normal mechanics and what a tank does on them
Immerseus: taunt on stack
Protectors: tank boss out of raid or in raid depending on health of it, 180 on gouge.
Norushen: taunt on stack, taunt add / kill add in room, eat orbs
Sha: taunt on stack, stand on a prison if needed
Galakras: (not on tower) Tank adds, swap stacks on boss
Iron Juggy: swap on stacks, do bombs if you feel like it
Shaman: swap on stacks, dont put geyser in raid
Nazgrim: swap on stacks
Malk: swap on stacks
Spoils: dont stand in crimson stuff that heals adds
Thok: swap on stacks (open a door
)
Siegecrafter: swap on stacks, kill an add
Paragons: dont die
Garrosh: swap on stacks and aoe adds
Now in LFR, half of those jobs can be ignored. Mostly the stacks part. Why should i be thanking you, of all people, the guy with the job a monkey could do? I've tanked LFRs were i've hit 20 devastates on Suen and went afk for the rest of the fight. Got up from my PC and went to do other things. When i got back i was standing in fire getting healed with a rejuvination and the boss was still hitting me. In fury gear mind you. Now in Siege theres even less mechanics, because you dont even have to move the bosses like on jin or horridon. Or pick up adds. All of your jobs are done the second you hit your first avengers shield, shield slam, death strike, maul or keg smash. You've won at tanking LFR / Normal mode.
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In LFR you can be damn sure you can never use a single shield barrier or shield block and still live. I know so because i do it every time i tank LFR. I spam heroic strike to kill it faster. In fury gear. Taking more damage than normal. Devastate, shield slam and revenge, thats all the buttons you need unless you want to give yourself the extra effort of heroic striking too.