Don't forget though, blanket silences can be also be used tactfully. You can use blanket silences to strategically and pre-emptively shut another player down from using their instant cast spells. As with all crowd control, blanket silences have diminishing returns and we also try to give them healthy cooldowns to mellow them out. If you have some examples of skill-less play with silences, we would be glad to hear more about it.
You're not going to see anyone using a blanket on a Hunter so he can't trap it's not going to happen. The only time Blankets are skillful is when you're against a Paladin for example and you see him running towards your healer to stun him and you blanket him before that. That's about it.
When blankets are skill-less? Every single time you miss a CS on a healer it's a skill-less blanket because you got rewarded for still missing your lockout. An example is when I play my Mage and I'm saying on Skype "Blanketing healer - On cast, lOLs". It happens so often it's unreal, I just there got rewarded for attempting to blanket the healer. Why should that be possible? I tried to miss my CS but managed to hit it by pure luck, it's not fun to be the healer when it happens, I know it happens very often as I play both a Mage and a Paladin and decently high ratings.
It's fun for the person that manages to hit that random CS but not good or fun for the game.
Some crowd controls have cooldowns and on top of that diminishing returns give them a downside which makes it impossible to recklessly spam because you will just burn out the DR's and your opponent will then be immune for a while.
If you're talking about Blood Fear it doesn't matter, Dispel CD is 8 seconds and Blood Fear 10.
It's quite simple, if you're playing a healer in high rated arenas or even low rated once, you're going to understand the frustration of watching your teammate sitting in a Psyfiend fear and knowing there's no point in dispeling it because the same NPC is going to re fear him after.
Or if your team is getting double feared and you're the only one that isn't feared, having to choice "hm which one should I dispel?" it's not fun, it's not tactical, it's just a question off who you're going to dispel, it's not like you're sitting there on Skype or whatever "okey guys who should I dispel? Can anyone of you follow up CC on the opponent healer if I dispel you?" It doesn't happen because there's no time for it.
It's VERY simple, the new system doesn't work with so much AoE CC. You need to cut down on it or revert the change. Give it a double use or something like Clemency gives you double freedoms or so. It can't go on like this because it's just extremely boring to play with.