That, and the dialogue that was spliced into the KJ encounter occurred
while you were doing the fight, rather than pausing everything like Kael'thas or Mimiron, or occuring only before and after, like Algalon. Kalecgos and Kil'Jaedan are actually yelling at each other (and Anvena) while the shadow spikes are flying. The fact that the demon's upper torso is pretty much enough to fill the room contributes a bit of epicness as well. If only our work in late p4 hadn't lined up with the server falling apart for two months...
As for Algalon - swapping to 6 healers and being sure a guardian spirit was up at the fourth big bang proved to be necesary to beat out the berserked auto-wipe. Risen Ally did
not keep Algalon in combat, even though it seemed to be ignored as a big bang target. With the tank damage nerf, we didn't have any problems keeping the MT up using only one holydin and a disc priest; all wipes were a result of raid deaths.
We chose not to sink any of the constellations; they were gathered in melee range, and our two rogues alternated FoK interrupts whenever a star was about to die to remove the risk of barrage/explosion combinations. It provided significantly more black holes to escape big bang with, though there were a few problems with the star-killing hunter falling through black holes trying to reach stars.
WMO - Our paladin has been mitigating roughly 8-10% of all autoattack damage via blocking since the damage reduction; I hadn't looked at the numbers prior to that. The exact value varied from pull to pull, but that seems like a non-trivial damage reduction. I'll have to compare it to what the druid was taking due to higher armor for that to really mean much other than "paladins use shields" though.
-Splug