I'm very surprised more people don't use DT. He is simply amazing even at 3*. I think people were mostly upset about the pack prices so they didn't even bother. I mean for crying out loud when he was bugged he gained 100% TM under palp lead which made him viable around 5k power.
I do understand he needs the right mods though. I have mine so he goes 2nd after TFP so palp and vader always have a clean target to hit. Aside from that his daze is incredibly useful and his terminate is 2nd only to anihalate for easy damage.