Two listens in, a few of random thoughts...
For context, I had only listened to Nightingale and Taurus once, and skipped the pre-releases of The Alphabet of Me and Lovebite. For now, I do echo the sentiment expressed here that the album appears to gain some momentum in the second half. Also, my appreciation of Fauna already had a pretty giant leap from the first to the second run, so that's promising
Lots of cool moments and ideas all over, and a plenty to unpack, obviously. My favorite Haken is Affinity, and I find the melodies in Lovebite the most Affinity-esque, so it's not surprising I enjoyed that tune so much. It's also the shortest and (relatively) most straightforward song so, again, not too surprising. The vocal melodies (not so much the sound) seem to have somewhat of a synthwave influence too, and I love that.
The current favorite is probably Elephants Never Forget - not because it's the "epic", by the way. It's just that it's a fantastic combo of early and "modern" Haken to my ears (I know, it's kind of funny to think of the band that way...it's not like they've been around forever) and the chorus melody is one of the moments in the record that struck me the most. Also beautiful reprise at the end of the song too. In fact, if there is one thing I kept thinking as I listened, is I wished there were more of these types of moments/melodies. Like the last minute or so of Island in the Clouds, especially when the rhythm changes to a straight beat. Fantastic stuff. Affinity had a TON of that.
Anyway, obviously early to say where it will land in my rankings. Just looking at their more recent output: of the Vector/Virus combo, I prefer the latter by some margin (I like Vector, but it is probably my least favorite of theirs, while I though Virus had a little more "color" to it, despite being obviously cut from the same, or similar, cloth)...I think Fauna has the potential to be above both, but it will depend on how the melodies and songs will reveal themselves over repeated listens.