I agree that Kalafina has been settling into Anison blandness more and more every time, probably due to their increase in mainstream popularity. What makes an anison sound like one is a bit of an ethereal discussion, I think the fundamental feature is the general feeling conveyed by the song, but that's subjective as hell. I haven't liked a Kalafina A-side properly since Alleluia and Kimi no gin no niwa so I'm happy that I'm finally getting to listen to something that is different from the super generic anison trinity of HB-OL-Believe.
Also YASSSSS to Hikaru lead, rise my Queen! I love this already. The PV is terrible but Kala's PVs usually are, at least in the past couple of years.
I don't know if the switch to typical anisongs is a Kajiura thing because I didn't like many FJ A-sides either since they sounded too formulaic to me anyway and at least Kalafina used to have more diversity in their sound when it came to A-sides (they still maintain some of that diversity in B-sides and album tracks though, which is great and I don't really see it with FJ), I mean, I'm inclined to believe that Kajiura tends to write some remarkably formulaic anisons with a few glowing exceptions here and there, which used to be given to solo singers before and then to Kalafina, but now that Kala is popular and people ADORE HB and its multiple incarnations she's kind of forced to take that route with the group. Don't forget that Sony Music posibly has a hand in this whole thing and they're not in the business to allow for Kajiura's musical expression but because it makes money. Of course they would also push for stuff that sells more and gives the group better recognition rather than releasing beautiful songs that are kind of difficult for the general public like say, Utsukushisa.
I hope Kajiura revamps FJ and gives them the good songs if Kala is going to become the Anison powerhouse. I still think Kajiura has a great talent and wonderful ideas, not too often lately, but I wouldn't say she's completely out of them yet.