Nihilis just seems more devious and secretive.
Sion seems like he's got nothing to hide. No dark cloak hiding his rotting flesh even. Very blantant. Therefore he's more like the no nonsense Maul than the insidiously secretive Palpatine.
Well, it depended on how much effort you put into side quests. If you skipped everything but the barest skeleton of necessary activities, you could cut it down to 1 1/2 hours.
Hmm...
Well, maybe more will be revealed the day the game actually comes out. What would be the point of not revealing all the characters on the website once the game's out?
No idea! A few subtle innuendos are dropped, and they think you're as boorish as ol' Zabrak "Stonewall Jackson" Maul with his lewd toliet talk! Honestly!
Yep. The Mods go away for a little while and look what happens!
By the way, perhaps we ought to define what qualifies as a spoiler so we can control the thread...