New Force Power:
Basically you swing your lightsaber and a concentrated arc of energy is let loose. This arc can cut through anything but another lightsaber, and can be blocked with the Force. This power will be called Force Arc, and your character can have it whether they're Rebellion or Council.
Additionally, here's a quick low-down of the planets and there relationships to The Jedi Rebellion or The Sith Order:
The Rogue Planets:
Yavet - Where the Rebellion is based. It is covered almost entirely by cities. It was the first planet attacked by the Order. There are more Rebels on this planet than on any other two planets combined.
J'sut - Another planet that has played a vital role in the Rebellion's growth, J'sut is the main source of training and intelligence for the Rebellion. It is here that apprentices for the Rebellion are found.
Weheir - A farming planet, Weheir supplies the food and rations for all of the Rebellion. Because it is so important, there is a high military presence there. Were the Sith Order to wipe it out, the Rebellion would be in deep shit.
Tonnot - A desert planet closest to the sun. Tonnot is covered mostly by Tusken Raiders, but there are three Jedi Temples there. It is said that the training on Tonnot is the toughest in the galaxy. It is here that General San'Unda of the Rebellion learned the ways of the Force.
Hanrana - Hanrana was the first planet to break away from the Order's Control and establish itself as a rogue planet. Hanrana is covered with criminals and s***, and is the definition of the word "rebellion." Although most of the planet is grimy trash, it is here that the Rebellion Fleet trains its pilots and engineers, and it trains them well.
Planets Under Control of The Council:
Sacorria - A rich and fertile Core planet, whose main export is rations to the Republican Starfleet.
Avirandel - A barren, rocky planet upon which the Republic trains their Starfleet.
Raxus Prime - A planet in the Outer Rim, it has only recently been captured by the Council. Raxus Prime is covered with scrap metal and is a primary shipyard for the Sith Council.
Denon - Where the Council is based. There is a high military presence and the unfortunate souls who were too unlucky to escape are mistreated and abused. Denon has been on the brink of uprising for a few years, but because of the military police's control, such an uprising would be quickly ended.
Coruscant - Where war criminals go to die, this is where the Council meets. Coruscant on the surface is a military and political puppet for the Council, where soldiers are trained and where the Senate is based. However, under the surface in the underworld, ill thoughts of the Council lurk. Coruscant could easily be overtaken by an uprising, and it would be a very bloody battle.