Maybe you could call the mod "Vision of the Future." I know that's the title of an EU book, but I think it'd be a good name. Another name could be "The Force of the Future." (since you intend it to be more like JO)
I would keep destruction and deadly sight. There's something indescribably fun (and evil) shooting a ball of destruction from your hand and watching the white armor fly, or making your enemies drop like flies just by looking at them. Maybe a healing dark side power (like drain as you mentioned) would be good. It could be something as simple as giving you health when you grip someone. That way, Light won't have an edge over Dark in SP.
Saber throw and Force Jump sound pretty good. Maybe make Lightning a bit more powerful?
The different saber animations and 3-D lightsaber sound pretty cool. I wouldn't mind having Pull replaced if it means JO style Push.
This is just me, but maybe make the lightsaber so that it can block blaster shots a little better? It doesn't have to be like JO where you can stand there and deflect practically anything as long as it isn't behind you with defense set to 3, but maybe make it so that the blocking "cone" area will ALWAYS block shots. Maybe you could make the blocked shots be more lethal as well. It would put more emphasis on the "Jedi" in "Jedi Knight," if you know what I mean.
These suggestions are from a predominately SP gamer. I do not have MP balancing issues in mind, just how to make SP more enjoyable. (particularly Dark side
This mod sounds really good. From what I hear from you, it sounds like this could give JK a new lease on life. I would love to see a mod like this available for download.
btw, do you need any beta testers for this? (PM me if you do)