Shriekwing 6/10: Unexceptional early boss, cool mechanic.
Huntsman 6/10: Unexceptional early boss, but paced well.
Hungering Destroyer 4/10: Unexceptional early boss.
Sun King 3/10: A nice attempt on creating a different kind of fight, but it just isn't that interesting as a non-healer.
Xymox 5/10: A really cool progress fight, but terrible on farm due to overlaps/having to hold DPS which never feels good.
Inerva 6/10: A decent mid-raid boss where gear & output doesn't restrict you at all, although the core fight mechanic doesn't work.
Council 1/10: Irredeemable nonsense. Uninteresting mechanics, way too much downtime, buggy... Just a PITA.
Sludgefist 8/10: Best DPS-check boss I can remember for a long time. Perhaps a bit too comp dependant with how anti-melee it is, but a fun fight.
SLG 2/10: Yet to kill it, but already tired of it.
Sire (HC only) 7/10: Has some great animations & is an enjoyable pace for the final boss of a tier. Each phase feels distinct & interesting with the first phase perhaps being the weaker of the three, but I believe that changes on Mythic so there's that to look forward to.