Given that Weak Armour seems to be the main focus of this CAP (at least, the majority of discussion degenerate into Weak Armour discussions), we are going to want to make it capable of making use of Weak Armour. In my eyes, this means able to take at least 3 neutral physical hits and remain standing, or 2 SE physical hits and remain standing.
Zoroark's status with Illusion is primarily due to its abysmal bulk. Illusion would probably be the more viable option over Weak Armour if Special Tankiness was why.
I would like to see CAP4 be a Physical Sweeper over Special Sweeper. No real reason, other than to see a great Physical Psychic pokemon.
As others have kind of pointed out, a low PT would increase the risk of CAP4. I understand the need for risk on the Riskymon, but it is too fine of a line to walk and keep Weak Armour a viable option.
Physical Tankiness (PT)
Average / Above-Average
Physical Sweepiness (PS)
Very Good / Excellent
Special Tankiness (ST)
Bad / Below-Average
Special Sweepiness (SS)