Wow that's a lot of sets, all equally disappointing for me. I'm going to go through them one by one, but I'm not banking on getting to the end any time soon.
Physically based mixed: not something I especially like. Its special moves just aren't that useful. Could we consider, you know, not having it at the top? Otherwise, I think the first three moves are a given. However, the last move is somewhat questionable. Earth Power does not come especially close to OHKOing SpD heatran, while Fusion Bolt actually has a decent chance to 2HKO after SR (as does Focus Blast, if you can hit with it). Fusion Bolt just does more to Jirachi. If you were to run a +atk nature (which I would recommend, as a slash) then earth power would be almost useless. Hidden Power Fire I find extremely tempting, to quickly dispatch Scizor, Forretress, and Ferrothorn. Focus Blast is also pretty bad; it does less to the aforementioned steels outside of rain, and does little more than fusion bolt against heatran. I would actually slash it Hidden Power Fire / Dragon Claw myself. Dragon Claw is really amazing, because Kyurem is so powerful that people often need to sac stuff to it. Committing suicide by locking yourself in just to accept your opponent's sacrifice seems like a bad deal to me.
Specially based mixed: I find it completely astonishing that Draco meteor doesn't even get a slash on this set. I would slash it with Hidden Power Fire / Focus Blast, and possibly consider removing focus blast because it's not very good. It won't OHKO Tyranitar, and it's outdamaged by HP fire or Earth Power against almost every target (excluding rain again). This set is designed to smash through stuff; how is it going to do that without its strongest move? Also, could you lose Dragon Claw please? Ice Beam replaces it as a reliable, staple move here.
CB: I don't like Ice Beam all that much. Only thing it really hits is gliscor, and maybe Landorus-T. Neither of these pokemon stands up to your Dragon STAB at all well. Gliscor is going to get is taking an enormous chunk from Outrage, use Protect if it has it, and just hope that you have a two-turn outrage. HP Fire is good to hit Forretress with - something that actually can stand up to your other attacks - and so deserves some sort of mention. Even Rock Smash is OK - it does comparable damage to ferrothorn as outrage, and gives you a good chance to force it straight back out with a defense drop. Also, could you make Dragon Claw sound a bit better - Outrage is so often suicidal that Dragon Claw is extremely useful - it's not just a filler move. To emphasise this I would even consider moving it up to the second slot.
Substitute Shuffler - Get rid of Dragon Claw. It's not a good idea. Generally, I really dislike SubRoost sets without pressure. Realistically you aren't going to stall something entirely out of pp. You really need to be able to take advantage of free turns to become more threatening, because otherwise the set is just a great big piece of setup bait, and actually invites the opponent to heal up all of his pokemon with recovery. Hone Claws completely changes this; if you don't keep attacking Kyurem, it's going to set up and plough through your team. Hone Claws is a necessity. Dragon tail is also very good, because it lets you bring in some setup bait, and gives kyurem the ability to deal with opposing stat boosters. No room for Dragon Claw.
Choice Scarf: Remove sleep talk, IMO. Scarf actually appreciates the special moves sometimes. Kyurem is a hilariously bad Breloom switch in, and so a poor choice for sleep talk.
Substitute Attacker: Can't say I ever really understood this set (Sub on an sr weak pokemon with no recovery), but I continue to hear good things about it from reputable players. I'm happy to leave the details to them.