My vote goes for Riverside. Of course a dream double bill would be Opeth with either Katatonia or Porcupine Tree. But I don't expect that to happen anytime soon.
Hmm, I'm not sure about that. I like the band, but I'm not sure if they are experienced enough to go on tour with Opeth. They've only done something like 5 shows in their entire career.
Enslaved would be reasonable, as they cancelled their spring tour, though I think they'd want to headline.
Else, they should give the metalheads the finger and tour with their Swedish prog buddies Paatos, Anekdoten, etc. , as we'll never see those outside Europe otherwise.
agalloch, so mike can pull down his pants and say "this is what it is supposed to look like, you fucking cunt!". every fucking gig oh and opeth will obviously play 2x longer than usual and not let agalloch play at all.