I really want to emphasize something that capefeather said in an earlier post.
I think that tactics requiring multiple moves, like perish trapping and dual screens + possibly Memento, are a gigantic distraction from the concept, unless Sketch is required to complete the moveset.
I agree with his sentiment here; full-on strategies facilitated through the presence of multiple moves on the movepool
are a major distraction from the concept, and one we should avoid. That said, we need to keep in mind that "enough is enough" and I am not going to allow a wanton number of moves just because I can. You'll see my vision for full movepools soon enough, but suffice in the knowledge that I want them to be small and highly focused. Now onto the moves.
Some people talked about disallowing Counter because of things like Pursuit. However, keep in mind who the only serious Pursuit users of OU are: Tyranitar, Scizor, and Metagross sometimes. Tyranitar is terrified of powerful physical Grass STAB and is OHKOed and outsped by physical CAP 2 packing Power Whip, while Scizor and Metagross both are wary of Sketched Fire-type coverage. Furthermore, Scizor is 99% of the time going to be using Bullet Punch against CAP 2 rather than attempt a measly Pursuit. Almost every Pokemon that tries to stop CAP 2 is going to attempt to do so by outright murdering CAP 2 with powerful physical moves.. Now that is a better reason to disallow Counter. I agree in general with this sentiment, and also because I do not think a CounterCoat set is appropriately abusive of Sketch (and thus distracts from the concept). For this reason,
Counter is disallowed. However, most Pokemon are either OHKOing CAP 2 with potent special Fire-type STAB (Heatran) or are immune to Mirror Coat (Hydreigon). In general, it will be less valuable, and alone doesn't distract from the concept. Thus,
Mirror Coat is allowed.
I also agree that we need a "one or the other" setup for Perish Song trapping. I think alone, both the 'trap' and the 'perish' are underwhelming. This is an interesting situation, since neither is really a problem and even together they're underwhelming (just distracting). For this reason, I'm not going to disallow either, I am going to
disallow the combination of Perish Song + Block / Mean Look / Spider Web. This will hopefully achieve the desired effect without limiting whatever flavor movepool authors want to use. I guess this also opens up some movepool authors to making ugly egg move illegalities, but that's really their decision. I'm not quite set on this totally, so it's possible I may just move to disallowing one side of the coin or the other down the road.
Dual Screens is an interesting situation. I do not actually think CAP 2 is a very effective user of dual screens regardless. Every use of the moves I can think of is supplement to a Sketched coverage move or boosting move for interesting sets that do not seem overwhelming given CAP 2's natural coverage. CAP 2 also really doesn't get distracted from its concept, since maybe it would Sketch something interesting like Memento to complement a full dual screens set (although Latios still runs this set much better due to 110 Speed). That said, as a conclusion to this, I am
going to allow both Light Screen and Reflect, but disallow Memento and Healing Wish. The disallowing of the latter two is to prevent crazy exclusive DS sets with suicide moves and no Sketch abuse. Just the screens themselves are not distracting, however, and so I've allowed them.
Lastly, there is the matter of Destiny Bond. While there seems to be a lot of push to disallow, I think it is an interesting supplement to Speed-boosting sweeping sets that would forgo a mission-critical coverage move in order to get a KO on something as the last ditch. Furthermore, it doesn't protect CAP 2 from Scizor's finishing Bullet Punch. Because the community is so opposite how I feel about the move, I will
move Destiny Bond to controversial. Perhaps more discussion down the road will solidify it one way or the other.
I've added some new target discussion moves to the OP.