Dark Forces ultimately didn't have enough for me to work with, so I went with JK2's music (I thought about using KOTOR's, but it's got a different style with no recognizable movie ties). I dropped the quality and OGG'd to keep the files size down, going from 14mb down to 4mb. There's a switch in the Options room that will disable battle music if you find it too annoying.
I've added a build-able object that will make blaster rifles more accurate, the droid targeter. The rifles will still be a little off, to help stay balanced with the Flash Cannon and Dawnsorrow. Also, I've made them slightly more inaccurate without the upgrade.
I'm still toying with the idea to add a droid follower, in the vein of Lethal Alliance's Zeeo.
[EDIT] I've increased the intercooler's rate from once a second, to five times every two seconds. Makes it a more worthwhile to build.