This is the one bit I can answer. Saberstaves require an entire different method of training just to avoid turning yourself into the black knight from Monty Python. Your dude never gets the option, so it's probably safe to assume you've gotten little to no training with them whatsoever. Even then, a fair number of your attacks would just look silly with a double-blade.

Y'know, I do have to wonder what the procedure would be with Sith that decide to become Jedi but are also already married. Do the Jedi try and bring up the idea of divorce or try and force the issue? I don't envy the guy who has to tell my Sith Warrior that he has to break up with Vett. Can't help but picture that ending with a dead Jedi, and my Sith Lord opting to just go elsewhere for his light side fix. (That would probably be a best case scenario right there.)

Taris in particular hurts because that one is more of a SYMBOLIC victory. It doesn't hold some great secret to the force, an important resource, or even act as a staging ground for further expansion! The people in charge just don't want to see it rebuilt because Malak destroyed it, and they think it's a good symbol of Sith strength!

Even the power of the Dark Side is nothing compared to that of an angry woman who has been scorned in some manner.