Currently, slam is a 1.5 second casted ability. The 2 point talent lowers the casting time by 0.5/1.0 seconds, leaving it at .5 second cast time. Many of the complaints or suggestions in this thread have been about it's lowered utiliy as an ability given its utter uselessness in PVP and it's limiting use in raiding. It's a GCD filler at this point. What many of us were saying is that if they added something like a Sunder Armor effect to it, or an interrupt chance, even, the cast time would be more than understandable.