I'm not certain, Akix would I guess, be in possession of one of Death-Blades O_O Um, well it gets worse, if Sora is absorbed there is no hero of light at all, no hero of light, not good.
But as if things weren't bad enough, her actions brings about an apocalyptic future. Where because there was no hero of light somewhere around 12,000 worlds ended-up falling to darkness. On top of this, Lexaeus was given a mission (Secretely by Rexon) which was going to put an end to this, until Xaldin caught wind, and took initiative without Saix's knowing by stabbing him to death. However, Xiolio takes a picture which catches him in the act. Xaldin and Saix are brought before the council, to have their punishment decided; Fading from existence or being transformed into a dusk. Xaldin, is sentence to death, (an eye for an eye) his final words are he saw Lexaeus as a loose end and nothing more. Rexon, knowing that they were commrads (As he was Saix and Lea's friend and arrived at RG around the time Aqua saved Terra's body and sacrificed her own freedom. And that he was part of the RG Military before becoming a nobody.) is disgusted with Xaldin and proceeds with killing him. However, this sadly doesn't solve the problem or undo any of the damage done. In complete honestey, this is here as possible end, however not neccesarily.
As for the Berserkers catching-up, it seems almost enevitable