KI changed the block rate because in CL all the guys blocked criticals and the one rare critical for a guy with 44% or something was pointless. so it is a GOOD thing they dont block criticals,
For one, depending on what type of gear you have makes their critical block less likely. Example: If you have the high critcal gear that KI has put out there, then their critical block isn't going to do much.
Second, I think it's Kingsisle of making the odds even. I mean, I don't know about everyone else, but I don't know how many times I said to myself, "What happened to my critical block!" The enemies has a higher chance of criticaling (is that even a word) now and our old critical block stats aren't enough to stop it. I have a few friends that has said the same, so I know it's not just me.
And third, um does some of those mobs and bosses really need critical block? I mean, ouch just thinking about a one of those high health bosses having a good critcal block.... ya idk, but I'm thanking KI for the less Critical block.