Alright, so we've had a lot of good discussion these past few days, and now it's about time to get ready to wrap things up. 24ish hour warning
Agility + anything
As has been brought up in the past, attempting to utilize Agility is problematic, as the pokemon in question requires already good base stats in order to properly use it. Therein lies the issue - if the pokemon's base stats are good enough to use agility, it may just decide to forsake the use of setup altogether, in favor of an all-out attack set, or the usage of a Choice Scarf, Band, or Specs. With this extremely high risk of concept derailment, as well as the possibility of having stats that are flat out too good, Agility is no longer on the table.
Calm Mind/Bulk Up(or Coil)
Right, to touch back on these two moves: their usage is upon defensive pokemon, to enable said pokemon to both gain more bulk, as well as potentially gain more boosts. However, said pokemon need the ability to set up repeatedly, which requires access to recovery, as well as good defensive stats, and the ability to at least operate off of only two (or in some cases, only one) attacking moves. A good example of a pokemon with access to both Bulk Up and Swords Dance would be Talonflame, whom utilizes bulk up as a wallbreaker set, using Gale Wings for both priority recovery, as well as priority STAB brave bird and immunity to burns to become a stallbreaker, as well as Swords Dance to simply sweep. I'd like some more discussion on these two, namely if either the Bulk Up + Swords Dance or Calm Mind + Nasty Plot sets would be desirable at all for our CAP, and if so, if we can properly make such a set without one option vastly overshadowing the other (As is the case for Mega Sableye, for whom Calm Mind entirely outclasses Nasty Plot). A hypothetical Swords Dance / Calm Mind set was also brought up earlier - I would like to see both it and its sister combo, Nasty Plot / Bulk Up, be discussed.
Dragon Dance + Nasty Plot
This option has been getting a lot of support, so I suppose I don't have much to add here that hasn't already been said.
Defensive / Offensive Boosting
Something that hasn't been brought up too much, but either Cotton Guard or Cosmic Guard plus some sort of offensive booster, such as Dragon Dance, may also be a possible direction to take. Instead of focusing purely on two kinds of offense, it would also have a defensive setup option - though, obviously the issue here is that it might to choose to simply run both, such as the case of Cotton Guard Dragon Dance Altaria. I haven't seen much discussion at all on this one, so comments and thoughts on this particular set up would be good.