I certainly think at the very least there should be a percentage-based threshold for ALL ccs breaking. I think fear should break extremely early, roots a little longer, stuns a little longer etc. But the pointless RNG of going from 70-10% in a fear without it even pretending to break while running you in utterly random, often completely fatal positions isn't too much fun, in my opinion.
I'm kinda sick of every class having to have a stun, silence, interrupt, fear w/e mechanic, often spammable. I know there'd probably be even more whining if certain classes/specs lost their precious game-breakers now but I, for one, would definitely enjoy PvP a HELL of a lot more if CC toolkits were toned down massively. A certain poster above me stated that 60-70% of the game "in control" of your character is pretty good. Not only is that often not the case (sup MLD? etc) but how is that a good thing..? Especially when it's often next to impossible to break the chain, and even if you do, they still have emergency CCs to tide you over until the next CC is off DRs, e.g deeps, ursols, SF/DC etc etc.
Just not fun in my opinion.