I'd like to see a whole lot about lightsaber forms. First i'd like to see something along the lines of certain lightsaber forms will slowly pull you to the dark side unless you have a certain charisma. A very good example of this is Mace Windu's lightsaber form of VII/Vaapad. This form uses your anger to fuel your attacks, but unless you can control this anger, you fall to the darkside. This is the case with Dipa Billaba, Windu's apprentice, and sora bulq (they both used vaapad). And also i'd like to see feats that allow you to master certain lightsaber forms.
"A Jedi gains power through understanding, and a Sith gains understanding through power."