People who deserve to have the universe fall on their heads.
There are "people" in this world who are so rotten that mere punishment would never be enough. You might think that it would be enough for the weight of the universe to fall on their heads. One could imagine the entire weight of the universe compressed into a small singularity such as the one that existed before the big bang and then that weight would fall on this monster's head creating a neutron bomb effect: destroying the monster while causing it infinite pain but leaving the surroundings intact.
Or perhaps we could imagine them being thrown into a pit of a monster named Sarlacc from the Return of the Jedi movie. Once thrown in, they would be digested for eternity. Yes, even that seems too short of a time for these monsters:
Dick Cheney (Duh!)
The NCAAA and Viacom TV execs for March Slavery Basketball
Mitch McConnell
Rush Limbaugh
Roger Ailes
Donald Trump
Pat Robertson
misJudge Roy Moore
Ted Cruze
misJudge "Scalito"
Abu Ayyub al-Masri (Isis founder)
Tehran Tom Cotton
Mohammed Yusuf (Boko Haram founder)
George W. Bush
Scott Walker
Lloyd Blankfein (CEO of Goldman Sachs who serves as a representative of all Fraud Street. You know the industry whose externalities have created infinite pain for the people of the world.) Lloyd gets the special infinite pain reward. He should be thrown into Sarlacc, have the weight of the Universe fall on his head and then tortured by Bush/Cheney. (For a start.)