They say the reason hell is so horrible is because it's separate from God. So I won't pretend it's okay, and all I'd do is keep the place from bursting at the seams. Thanks for doing my job for me, God.
For people who commit sins, I will remind them of each one and then torture them in a fitting manner designed to teach them WHY it's a sin, and then when they regret each of them adequately (how deeply they'd need to regret each depends on the sin and circumstances of it - a man who kills in self-defense probably shouldn't be there at all but if he is he'd spend less time being tortured than a terrorist) I'll let them go free in Hell.
Being in hell for alternate religious beliefs will be excluded unless those beliefs encourage willful sinning. I mean, atheists for the most part aren't bad people, I don't wanna torture them for eternity unless they were also assholes... and most of the time, not even then.
...
But for criminals there for willful cardinal sins, they would have their heads locked in place, facing towards a window that looks out onto heaven but forever unable to touch it. A pineapple up the ass is too good for rapists.