I understand your point of course. AM best functions, I think, when providing NEW music. New music is different for everybody, but I think we all agree that Lamb or Gates is not new music to anyone already in here. Conversely, I had never heard of Porcupine Tree until I listened to AM and so I am grateful to AM for that.
BUT:
They play alot of obscure (or relatively less known) music even with Yes, Genesis, King Crimson at current levels. You clearly want that percentage increased, but is a Ritual or Supper's Ready type epic once every 90 minutes or so too much? Is that type of material on AM more than that? Maybe so...
STILL
"Its Only knock and knowall
and I like it"