Interesting. My inital response to the AoS segment was that it was a bit underwhelming - some scenery, a narrative book and yet another endless spell (effectively) didn't seem like much of a step forward in the context of what we've had for AoS 3.0 in the past 9 months. Though I didn't have big expectations of something like a new faction, so I certainly wouldn't say I felt disappointed.
That said, now I've seen the new NH hero - which is gorgeous - I'm more upbeat.
Scenery: Some cool bits in there, I especially like the mini-Shrine and statue, though I already have plenty of scenery and these days (cost of living plus new pricing) I probably won't go for it.
The Incarnate: I don't really like the model much, but this may just be endless spell fatigue. I realise there's apparently more to it than that, and it could be that with more context/rules it's really cool. So I'll withold judgement until there's a bit more info.
Thondia book: I buy all of the narrative books, so I'm sure this one won't be an exception. I'm still a bit unsure of how the Season of War thing will work - if GHB is coming in the normal time, and it will change to a new realm, this does seem a bit late in the year to introduce, and would have been more logical alongside Dominion? Maybe it was COVID delays.
Awlrach the Drowner: All the yes.
Overall it's great to see a substantial new unit for Nighthaunt - and along with the Scriptor and Crossbows, that's encouraging to see. I guess at the same time, I can't help but wonder why Fyreslayers - arguably much more in need of something substantial to boost variety... and not just another foot character - didn't get anything. I'm sure I hope we'll see plenty more for AoS 3.0 this year, so far since new Stormcast and Kruleboyz I think it's just 2 new hero models (Idoneth and Fyreslayers), with 3 new heroes (NH and DoK) plus one unit (NH) to come.