Quick question for one of my characters- she has natural powers (magic and probability altering) that make her a better fighter without weapons, could she sign up or is she better off the organization?

That said Kerrigan is made for fighting. Literally. But she wouldn't take to just the solider role very well. She is used to being in charge of the action, first as the second in command of a terrorist organization working to overthrow the government and then during her reign as the Queen of Blades when she ordered her zerg to go kill people and was very, very good at it.

She's good with all weapons, especially knives. She has a ton of experience in just about all fields of combat and also in espionage. She has strong psychic powers if we keep fighting the Ohm after the rebellion (thanks to the Daligig tampering with her). She can also read minds with effort.

The only caveat is she is going to be super involved in the rebellion and I'm not entirely sure yet what all the consequences for that will be. She'll also have trouble following orders, which could be played out with her dealing with it or leaving because she can't handle it. Could be interesting either way.