Yahtzee chooses the class focused on cover-based shooting... excuse me while I go laugh for a bit.
Okay, back. They must've changed it sometime after this, because you now get points appropriate to whatever choice you made even if you lose the dice roll and everyone else voted against you. I get the frustrations with the annoying linearity of the Moral Choice system though, knew you'd mention it before I started. Sadly by now it's Star Wars tradition- it's been around since the days of Jedi Knight on the PC.
A lot of the Dark choices seemed incredibly petty to me so I just stuck with whatever choice I liked or whatever builds relationship with my companion since that actually has a more immediate effect on gameplay. Try and build karma with the Companions you like personally, and leave the rest to rot on the ship with your annoying droid.
Not that I liked Corso Riggs that much when I tried the Smuggler. Idiot country hick thinks he's a fairy-tale hero and brings a grappling hook along for a long-range fight... but you can turn that off along with anything else a Companion does. You could even in Beta, the tutorial tells you around Level 10 I think.
Lots of flaws, but this has to be the best review Yahtzee's ever given to a MMORPG. I'm personally enjoying it more than I ever did WoW, but I'm a Star Wars geek so go figure.