While I appreciate the futility of 'punishing' the crooked bastard, who has done more harm to humanity than 99.8% of everyone ever born, I also reluctantly acknowledge that WE (as humanity going forward) need to evolve enough to shed our instinctive blood lust and learn forgiveness in order to arrive at the end the Good Lord intends for us.
Best we can do for GHWB is pray that he is somehow found redeemable and allowed a few lifetimes to work off the Karmic debt he has accrued. That's damn sure a tough pill to swallow, but it seems there are plenty of those to go around for everyone, even those of us who are already awake.