The Dark Side suffered a bit too much from the "haha I stole your your children's lunch money, omg lol!" syndrome. Hopefully this will be a bit different in TSL.
Anyway, played LS meself. Or rather "grey", since my Jedi was quite unstable and impatient. Some good acts, some evil ones, you get the idea. Still, it went OK in the end, and my little jediz0rz ended up as a quite devoted LSer.
Second playthrough was pure LS, though...