Even if we had full chat, it wouldn't make much of a difference. Wow pvp has full chat, and unless you're running with a group, the same problem exists. The pug-only nature of cc makes coordination hit or miss (mostly miss). Everyone is on a different target thinking they have the smartest target (or they don't have the experience/comfort level to switch well), when the reality is that a dumb target that everybody is attacking is better than 4 different smart targets. Unless it's a limiting paladin. But even then, you'd only be wasting dps for a few seconds as opposed to the whole match.