I would imagine they find it a rather curious idea, probably kind of odd since this is not entirely how souls should work? But I bet there is a certain sense of "hey, same hat" moment about the whole thing.
Lacedrace, Lord of Change probably finds the whole thing with Eldar Spirit Stones a great field for future research, especially given how she was the one to initially coin in the idea of crystal bodies among Fuzzes. So I bet she is interested to study the whole thing, hoping as well to perfect her own work in the process and make being in real space even easier on five of them.
An'Hangra, Bloodthirster I would say, finds it really cool for the simple reason of Wraith Constructs being formidable and even legendary foes to clash with, and wanting to throw hands beyond death itself is something she can really relate to and approve.
Balthrag, Great Unclen One likely finds the idea slightly odder, as it seems to be... Very un-embracing of your decay and death, which is not something she really supports? Also, all these spaceships can really use more vegetation and bog there. I imagine she can actually find more common ground with Exodites and their very natural worlds?
Shankay, Keeper of Secrets... Okay, l would personally assume that she, being a daemon of Slaanesh is on every "Kill on Sight" list existing between Eldar, so I feel like pretty much every encounter would be a combat encounter. Or stealth. I bet it pisses her off because she just knows that these pesky elves have some really unique skills she just must learn, but they are not sharing. Ugh.
