Don't mean to start a fight, but I would argue that Weathervanes is far more "cute" than Diluvia. In fact, I thought this the first time I heard the new album. It seems more mature than Weathervanes. No more lyrics like "Every now and then she offers me a lemon Now & Later."
That line made me throw up in my mouth. So did the opening line of Kilojoules. But those were just lyrics, and that was only two songs. I guess what I'm trying to say about Diluvia is that it feels very delicate, both vocally and to a lesser extent, musically; I'm not necessarily referring to the lyrics. Maybe 'cute' wasn't the best choice of words.
I definitely agree that this is a major step forward for them. The album just took me a couple listens to get into. At this point, I'm fully immersed.