Battle of Dazar'alor
Champion of the LightSingle Target / Cleave
When you're not going to be dpsing the adds (to parse highly) and focus on mechanics instead, you want to play a full single target build.
Make sure you don't get blinded by the Blinding Faith.
If you're feeling like a team player, focus the priest to hook & kick the Angelic Renewal when they are casting.
If you're full on cleaving the adds, then it depends on how fast your adds will die. If they die quickly, using Killing Spree instead of Dancing Steel would be a better choice. If they die slower, you can just spec into Dancing Steel and passively cleave the adds.
Grong, the Jungle LordSingle Target / Cleave
On the pull just do your normal opener, but don't use your Adrenaline Rush until the adds spawn.
Make sure not to miss your Kick and in the rare case that the boss is nearby, position yourself closely to cleave all three targets.
Jadefire Masters is a fight where you'll be cleaving constantly (at least two of the bosses and when adds spawn).
You want to be using your CDs as they come up unless the Ring of Hostility (orb wall) phase is happening.
OpulenceSingle Target / AoE
In the rare case where you're raid is missing DPS for Phase 1, you can opt to go for Blade Rush in this fight over Killing Spree. Overall in Phase 1 you should try to make use of your Acrobatic Strikes as much as possible and using your Killing Spree on CD without dying.
In Phase 2, save your CDs for the adds and re-roll for Crit if you don't have that buff on you. Chances are, even with Crit on the ground, your Killing Spree will end up teleporting you away during its duration, so your Ruthless Precision buff will still have value.
Conclave of the ChosenSingle Target
Conclave is mostly a single target fight with with the exception of the raptors.
To maximise your DPS, save resources for when the raptors spawn, start cleaving the close ones and Grappling Hook away if the ones spawning on the back pile up as they're the ones usually alive the longest. Don't instantly use your Between the Eyes when the raptor spawn as they'll be stunned away from the raid and end up not being cleaved.
King RastakhanSingle Target / Cleave
In Phase One use your blade flurry preemptively on your opener to start cleaving without having to waste a GCD. Afterwards make sure to pool your energy and save a Between the Eyes, pre-use your Blade Flurry right before the totem spawns and use all your energy on it.
In Phase 2, have your Adrenaline Rush ready for when the adds respawn with 2 charges of Blade Flurry up.
High Tinker MekkatorqueSingle Target
Mekkatorque is a full single target fight so you want to be stacking your ST traits on this fight.
Make use of your Pistol Shot to build up combo points while running away with a bomb, or while the boss is out of range.
If you get thrown up in the air during wormhole generator, try to Grappling Hook to the ground instantly, as opposed to while coming down since it's more difficult getting it off then due to lag and the spell's slightly unresponsive nature.
Stormwall BlockadeSingle Target / Cleave
In Phase Two, you should make use of the boss's large hitbox to cleave the adds when they get close. You can also cleave the Sirens as they spawn but its more risky in case you're the one being targeted.
Lady Jaina ProudmooreSingle Target / Cleave
In Phase One, you'll mostly be dpsing the boss. When the boss moves close to the ballista, make sure to activate your blade flurry and position yourself properly to cleave them, same goes for people randomly getting ice-blocked (Frozen Solid) in the fight.
In Phase Two, cleave the Ordnance barrels if the boss is next to them and they're high health.
Before the boss hits 30% health, start rerolling (Roll the Bones) for good buffs unless you already have long duration ones, you don't want to be rerolling during the wall.
Phase 3 is straight forward, but while running there, you can DPS the elemental to get longer buffs rolling.