One of my favorite things about SW:ToR was the fact that until you hit 50 all the classes had their own unique story line. Not mention on my Male Sorcerer my Apprentice wanted to have my babies :P That was too damned funny. I also like the Affection System. The bonuses for maxing out their affection were decent. and on top of that there was the Untiy and Sacrifice abilities where you could reduce incoming damage or steal health from your companion for a pretty sizable heal. The one thing I wish that they had done differently with the companions was giving me more control of their stats via a Talent Tree similar to the Chocobo here in FFXIV.