1. Everyone gets the same afterlife.
2. Everyone's afterlife is freaking awesome. All your dreams will come true, assuming they're not sick and evil dreams.
3. Everyone is forgiven for their ignorance and mistakes, because now they are enlightened and they know what they've done wrong and experienced pain and death and seen what happened to the people they've wronged, and they no longer suffer from mental illness or psychological disorders or just plain rampant ignorance that made them evil. There's also no religious conflict because the "true" religion is known to all, and ideological conflicts have all ended because through enlightenment comes a lack of dispute over ideology, especially in an afterlife realm that is freaking awesome.
4. People will be too busy experiencing all the things they've ever wanted to experience to worry about not letting go of revenge fantasies involving Hitler and a pitchfork inserted into his body. Revenge and hell do not exist in my afterlife.
5. God put me in charge because I am the best person for the job. Therefore, you can question my decisions, but you'll also know they're the right ones. Tough dooky if it's not revenge-y enough for you. I weep for you while you achieve everything nice that you ever thought possible, and how that's not good enough an afterlife for you, mister impossible to please.