The idea of CV is great, gives diversity, however the execution is poor. Unless you're in a CV yourself, the only defense you have against a CV attack is purely based on RNG, you have no real control in countering an attack. You have to rely on teamwork and the skill level of the CV player on your team.
The CV game play in it's current form provides nothing but a poor experience for everyone except the unicum CV player. Even when you have a great CV player on your team, it ruins the experience because of the imbalance.