I listened to Nightwish's leaked album, and didn't even enjoy it. Imaginaerum, Oceanborn are far more interesting albums of them IMO. I'm not a huge fan of the band either, but this one fails to attract my attention and unlike almost all their albums, it doesn't seem to offer a couple of great or fantastic songs. I only enjoyed Elan in the album. Hope that my opinion will change after some more listens, and this album will grow on me in time...
I didn't like Enslaved's album either. I think it used to be seen as an underrated band, and after people complained about this situation a lot, they seem to ironically become overrated. They're different and may be unique, but I don't generally like them at all.
Finally, Beardfish's new album is a great prog rock album. I don't know their pre-"Mammoth" albums, but their last 3 albums are all very good, and their latest seems to be the best among them.