Ive actually put alot of thought into this, and I want to dump my original idea.
There should be no big reward system or buffs in this. Because then everyone will only join to gain the rewards. I propose something else.
Instead of joining a religion, We can choose to join the dark-side(The Emperor) or the good-side(Yoda) of the force. Dark-side obv you are evil all the time, Good side obv you are good all the time. Each side of course is hell bent on destroying each other.
There's already a script on the Emperor to join the Dark-Side(though he is harder to find than Yoda, Darth Vader is a good substitute also)
Add a small script to Yoda to join the force of good.
To join first time is free and leaving is always free. After you leave you will have to pay a penalty to rejoin. War costs a lot of money. It will work like convey maxmove:
turns (num of times used ) x 10 million
(So if you use it 3 times it will cost you 30 million.)
Now when choosing a side you also gain an item to suck souls from the opposite align mobs you killed. These souls you can turn in to gain tradepoints. 10 souls equal a tradepoint. All souls will be carried in this container. You can look at container to see how many you souls you have.
Depending on the level of the mob is how strong of a soul you get.
level 1-50 mobs give 1 soul level
50-100 give 2 soul levels
100-150 give 3 souls levels
10 soul levels equal one tradepoint.
Thought about changing the souls to a different name, like you gain part of the force back when you kill them.
For people that dont want to choose any side, they may seek out jabba the hut, he will give you the item to remove souls from mobs upon death for a price whether its good align or evil align(neutral doesn't count). But it costs 20 soul levels to gain 1 tradepoint.
Jabba cares for either side of the force and just seems they always stick their nose in his business. Helping him get rid of either side of the force benifits him.
We still need to adjust the equation for alignment. If you don't like my time idea, that's fine the equation is fairly easy to adjust to make a lesser impact.
The gaining of souls happen automatically upon the creature dying, My original idea was to have to use a command like we do with skin corpse, But there's no way to tell what the level of the mob was from its corpse.