Yes, all of this has very much informed my own thinking on the subject.
FWIW, I am sympathetic to this view. C.S. Lewis has some very powerful -- and, it seems to me, persuasive -- depictions of hell as a place where people lose their "self", not only in The Great Divorce but in his Screwtape works, too. (And it's sort of the flip side to Till We Have Faces, where the implication is that we who live in this fallen state have NOT YET become the "selves" -- the "faces" -- that we were meant to be.) (And this all ties in to the nature of Personhood and the Trinity and how three Persons sharing one perfect divinity are the model for we humans who need to perfect our own Personhood while drawing closer to God and to one another, etc., etc. The Screwtape Letters has some brilliant stuff on this, too.)
As I mentioned above, I'm drawn toward the idea that personhood is not "annihilated altogether," but degraded, in hell -- perhaps progressively (since otherwise any finite but constant amount of personhood and consciousness and suffering would suffer without limit over time). Any thoughts about that?
That being said, I am not sure how "separate" from God one can be so long as one simply exists. I mean, if it is God who creates us and sustains our existence, then hell itself -- if it is to exist at all -- must be sustained by God, yes?
Though admittedly, God sustains the existence of rocks and chairs, etc., too. The mere fact that God sustains something's existence does not, in and of itself, make that something a Person. I guess I'm just ambivalent on the question of whether a person can become a non-person and remain, in any sense, a sentient entity that is aware of its own torment etc. To say that a person becomes a non-person seems tantamount, to me, to saying that the "person" has been annihilated altogether -- and while the grumbles of that person might echo into eternity, the fact that there is no longer a grumbler would have to mean that there was no one to suffer any torment for being a grumbler.