I posted before about the Immortal Achievement. I did like the idea of Immortal, and have great respect for those who got it, but in practice it was too stressful and just wasn't fun.
So what of the new Immortal: Conqueror of Ulduar?
It definitely isn't as impressive a feat as the old Immortal. But I think that in practice, it's going to be a lot closer to my ideal of "a side-effect of playing perfectly, rather than a goal that is worked towards in and of itself."
Last night was a rather mediocre raid night with a lot of wipes on Mimiron. But we did pick up a flawless Ignis and a flawless Freya1, marking the first two fights for the Achievement. It wasn't something we were explicitly trying for, but it was just a great bonus for doing the fight well. As well, it's only week three or so, so that hopefully gives us a long time to work towards the entire Achievement.
We don't have to play 100% perfectly for the entire instance, but this Achievement rewards striving for perfection, even if you only reach those heights occasionally. At this point, I'm really happy with the new version of Immortal.
1 Technically, Freya wasn't flawless. Several people got too eager and managed to blow themselves up after Freya was defeated. But it still counted for the Achievement.