Yo dude! Glad to have you with us, enjoy the site, all the cool stuff you can download to make Star Wars Rebellion even better than it all ready is! Ok, unfortunately, at the moment you can't 'add' more units to the game other than by replacing existing ships, regiments, or models. Given the layout of the RebEd someone would have to redesign the entire RebEd engine. However, you can use RebEd to enable either the Rebels or the Empire to build each other's ships (except fighters!). Couple of months ago I did an experiment with special forces and discovered that if you enable one side to build all special forces, and discovered that when when you invade a planet with enemy special forces on it, rather than be killed, they switch sides and are suddenly at you command to control. Never tried with troops though. However, given the seriously cool stuff constantly being thrown onto the downloads section of this site, stay tuned!!!