Even calling god a "cosmic abuser" might be being far too nice to it. That title doesn't even begin to reflect the infinite amount of suffering it caused, causes and WILL cause. Even the most awful and terrible person you could possibly imagine would still have infinitely more worth and means to be redeemed than this so called "god."
There is not a punishment imaginable that you could give this entity that would be enough to right the wrongs it has done, does and WILL do. There is not an insult disrespectful enough in any language ever made that is as disrespectful as it deserves to be called.
This god doesn't even deserve to be called a "He" or even "They" since that would be implying there is more to it than just a pathetically repulsive and cold empty framework of malice. It is entirely possible that god is a female, a male god would have a nanogram of empathy/compassion. Indifference is equivalent to evil for a creator that knows everything and can do anything...