I've been thinking about Stealth Rock some more, and came up with another thought: since Ghost is an underused typing too, we want to encourage the use of spin-blockers. This may seem counter-intuitive because we also want to negate the effect of Stealth Rock, but it isn't. Our pokemon should have Rapid Spin. Rapid Spin encourages the use of Bug, Fire, and Ice types on its own team by removing hazards, AND encourages the use of Ghost types on opposing teams to spin block. Because we want spinblocking to be effective, I think it should have a lot of difficulty spinning past bulky Ghosts. These newly popular Ghosts even could encourage the use or Dark type pursuiters to remove them on CAP5's team, boosting yet another neglected type. Gengar is the only frail ghost even sniffing at the OU meta, and gets plenty of usage anyway. We want to encourage Ghosts like Dusclops/noir, Sableye, and Cofagrigus, all of whom tend to follow the bulky-ghost mode and need a large, but reasonable, boost to be OU. Jellicent of course is probably the best of these right now, and also has Water type, so we might want to simultaneously discourage Jellicent a bit. What does this mean for how a Rapid Spinning CAP5 might look? We don't want a Rapid Spinning CAP5 to have an easy time wrecking these bulky neutral ghosts, which means it shouldn't be a particularly effective user of Toxic or have WoW or Scald. Also, these bulky Ghosts generally rely on WoW, so in this model we should make CAP5 a physical attacker that hates Burn. Making CAP5 strongly dislike burn has the additional bonus of further encouraging the use of fire type, though it also makes it weak to Scald (Water Absorb might be an idea to fix that). Lastly, we don't want to just encourage Jellicent use and therefore help Water types, so a spinning CAP5 should probably have a strong STAB Electric or Grass type attack to threaten it specifically.