This change doesnt make any sense at all. GC once said that the same talent with a 1min CD would be useless and never be taken... we all agreed... and now they do this.
Completely uninspired / lazyass change IMO. I think the whole lvl 90 tree needs a complete rework but I doubt they'll do that after saying that warlocks have had their fair share of changes over the MOP timelapse.
Anyways... sad.