I wasn't really a fan of how Jedi Masters and Sith Lords classes were handled. Their weaknesses seemed to vastly outweigh their overall strengths. I was hoping that the Jedi Master or Sith Lord would be absolute monsters with Force ability, but instead they seemed only fractionally better than Watchmen/Mauraders, and considering how weak they were in other areas, it didn't seem like a good trade off.
In other words, I felt disappointed that of the prestige classes, the ones called "master" and "lord" were arguably the weakest.