I dont think that was a nerf to DRG, it was a nerf to TP and among other things namely a nerf to MNK using Relic Knuckles to gain over 100TP per Asuran Fist. Everyone got hit by this, DRK's Guilitione, WAR's Rampages, PLD Vorpal Blades....its just DRG was famous for Penta spam, and now its fixed. But this update was never intended to be focused on DRG specifically, its just the way people saw it. Everyone got affected by it with the exception of Samurai since they never had more than 2-3 hits per WS.

Besides why get a SAM when you can spam multi hit WS and gain more than a SAM? That is whats really broken.