Wasn't there a light side zabrak in Ep2, I could have swore I saw one in the scene right before the big battle where all the Jedi are removing there hoods and showing there lightsabers.
Did anyone mention a saber bayonet, no don't beleive they did. I said use a blaster with a SWORD on the end, not a light saber. And it wouldn't be for jedis to use it would be for nonjedis in your party to use.
The best answer I can think of is to just look at the little things. Since the events of KOTOR: custom lightsaber hilts have been made, ships have gotten sleaker body styles, Armour, etc.
Ok, I'm gonna make a post in this topic...they could incorporate a "saberwhip" in the game for those who want one and those people could use a "saberwhip" and the ones who think it sounds stupid could not use it, that way everybody wins.
Personally, once I kill my enemies I want to continue on as quick as I can with my quests. I don't like having to watch my fatal blow (last shot) after the battle keeping me from getting through the rest of the game. Now if it was optional then I would go for it after I've beaten the game a couple of times and I'm playing it to finish out everything in the game.