Immerseus heroic down!
That's three now; Norushen, Galakras and now Immerseus. I'm noticing something about all these heroics so far: in each case, there's *one* major stumbling block, and once we overcome it, the actual fight becomes rather easy. In the case of Norushen it was strategising around maximising DPS without getting overwhelmed by adds. Galakras it was the downstairs group surviving the period where the rest of the raid is up the first tower, the breaths from the flying drakes are hitting for a lot, and Thranok is coming into play, and now on Immerseus it was the first rotation (Boss/swirl/split/slimes). In all three cases, when we solved that issue, the kill came very quickly afterwards. On Immerseus I always expected it to get easier but I was still shocked about *how much* easier things were for the second cycle onwards.
It's an interesting problem when it comes to figuring out how to motivate a guild through such a situation, when they keep running up against the same problem over and over again, but as a RL you're confident that that's the one remaining problem and it'll be plain sailing from that point onwards.