Well if you stick to just MOVIE CANNON, only green, blue, purple and red sabers can be used in the mod. Not a big thing. As for reloading, I've read alot of the Expanded Universe, especially the current NJO series. The "clips" or blaster packs are like battery packs for the blaster. And they usually take awhile to drain. I mean long firefights may drain one a half hour in EU perspective. As for the guns themselves, the current JO guns are way too easy to kill with IMO and are never seen in the movies and rarely in the EU. If you stuck with a movie Canon the guns would be...
Briar Pistol (replace with upcoming Blastech44 model being made)
Imperial Repeater (basic stormtrooper gun)
And you could replace one of the others with Liea's pistol model.
And the DEMP could be modified so that it's more like the guns the Geonosians use in AOTC. The others would be out.
If you included the EU the Tenloss Disruptor would be added. There is a Golan Arms Flechette gun in one or two of the older books but I didn't get the impression they fired the way it does in the game. I'd hence take it out, as well as the rocket launcher and heavy repeater.
As for Force powers, perhaps adding some new ones if you could.
TK Throw (telekenesis) - for objects in the environment.
Energy Absorb (not force absorb) - As we see Vader do in ESB when Han fires at him and Vader absorbs it into his hand.
Force Falling (lighten falls from high places)
Force Redirect (like in AOTC Yoda redirects Dooku's lightning at him)
Also I think some of the forces should be made neutral such as Mindtrick and the ones listed above. In the EU darksiders can use "mind control" so it's safe to assume they could use mindtrick as well.
I'm sure I can think of more things but it's late.