User blog comment:Emile674/About Crowd Control/@comment-7006769-20130522032511/@comment-4022742-20130523092337

In the case of Seju and Zac, there's not really a problem with their CC. Sure they have a lot of it, but it fit's their champ and they have to build Squishy to deal a ton of damage. The problem however is with the bruisers that are out there:
 * gets mobility in his  a movement and attack speed debuff on  armor pen and hard CC on
 * gets nothing but mobility in half his kit. Percentage damage of missing health on, sustain on and , and a attack speed and movement debuff on  and hard cc on his.
 * gets mobility in half her kit. Sustain in her passive, a 20% armor debuff coupled with a damage buff of percentage health and an attack speed buff on both and , to top it off she gets Hard CC and immunity to Crowd controll on her ultimate

These champions all outshine older champions that fill the same role as they do, just because their kits are stronger then necesary. Especially Vi needs to be vulnerable to being disrupted during her ultimate, because right now it has no counter play except waiting for the guarenteed damge and cc to hit you.