Heh heh. I guess it is kinda hard to have a "good" picture of hell, now that you say it that way.
Are you saying that once in Hell, you could, in theory, accept Salvation and leave? Or once in, there is no escape?
Look, the answer is: I really don't know. Some of the church fathers (Origen, for one) postulated something like the emptying of hell due to the final rescue of all men. I don't buy it, and there are verses that seem to me to militate against it, but it isn't like he had not read the same verses. We can say this... THERE WILL NEVER BE A TIME, NOW OR IN ETERNITY WHEN A MAN IN FAITH LOOKS TO CHRIST FOR HIS FORGIVENESS AND IT IS DENIED. That answer begs a few questions, but as far as the justice and mercy of God goes, that is enough for now.
I could go with that. Look, I don't mind a little barbequeing of such lights as Pol Pot, Adolph, etc. for a reasonable length of time - a century, tops. But FOREVER?? Not merciful and loving.