I guess it's a way to go, playing the long game and pretending to be a somewhat decent person, but I'd be nice to have an active agenda. I know it's still early into the expansion, but I hope they'll give you a chance to, for example, quietly strenghten the Sith Empire, while leaving Republic weakened, or something similar. It d like that there's an option for your character to plan to rule everything after Zakuul is defeated.
The thing is, I didn't always agree with the way LS/DS choices were presented, because sometimes DS choices were made plain stupid or harmful for the Empire, but it was't that often. But right now when I choose DS I feel like I'm playing a basic RPG character with a chaotic-evil alignment, not a Sith Lord.
And that might be my problem. I liked class story, because it was tailored for your character, no one else could do that. While KotFE pulls all classes into one story, and some of them simply don't fit into that role.
I think the situation with Sidious was quite different, he was hidden in shadows, because that was the only way to do it. Meanwhile, Sith characters in TOR are a part of the Empire, surrounded by other powerful Sith Lords, and to be on top, yes, they have to cunning and deceitful, but they also have to powerful, and feared, and I guess at some point they just get used to it.