I spent a long time working on my Wizard by getting 3 past lfie wizards and 3 past life favored souls for one reason. To have an effective enough DC so that I can help get my friends through difficult epic content which used to be regular epics and now is EE.
CC isn't totally useless, but it's much less useful in newer content and I must be much more selective than i used to be when forming an EE party. I used to be able to take 3-4 from an LFM without a problem, but without effective CC it's not worth taking a chance letting someone in the party that isn't an experieinced EE vet.
In motu CC requires a good DC and good spell pen, but it works. And I can take a random barbarian without worrying that he is going to use too much healer mana. I understand a small segment of the players want EE to be more difficulty, but I don't think tools like CC should be ineffective.
CC is the DC-based spell system that encourages inclusion more than any other. It helps save healer sp and keeps damage of party members to a minimum.
Turbine, please consider reviewing the effectiveness of CC DC-casting Before U20.