Hmmm.. It's an album of two halves for me so far.
First half is very dense and difficult, and hard to get into. It's not helped by the mixing on either Morning Mr Magpie or Feral - they're just hard to listen to on headphones (Feral is a mess, to be honest)
But the second half is much much better. Lotus is very good, and Codex is just superb. Separator ends it all rather nicely.
Overall, for me, it's not as strong as In Rainbows, and I won't end up listening to this album as much. There's no one track to match Nude on In Rainbows, and overall as a collection of songs it doesn't match up. But it's definitely on for Kid A fans, and I wasn't one of them.
But all of this is just a personal preference - what do I know about anything?