I dont need the merit of a Rabbi to get a connection to HaShem.
I wouldnt even accept pictures of Moshe Rabeinu there. Even he was just a human being with his flaws.
I hear that, and I agree with it. I guess the idea, or as I think of it, is that the pictures aren't so much as a focus, as much as a moment of "because I'm thinking of the guy in the picture, can I ask You, Hashem, to include some of his merit when considering my supplication?"
I'm not sure I understand this or agree with it, but that is the only reason I can think of why it is so important to daven in places like Me'arat Hamachpela (Cave of the Patriarchs).
The concept of Hell is an interesting one. I didn't believe in it myself until it was pointed out to me that there is a fairly impressive story in the Agadita in the Talmud in Gittin (I think it's on 57a, but I don't know for certain) that refers to an eternal torment for people who tried very hard to eradicate all of Jewry, or the legacy of their memory involved people acting in that fashion.
Particularly featured in that story are Nebuchadnezzar, Titus, and Jesus. I do understand that the important part of the story to remember was that it was far better for Onkelos to become a Jew than to attempt to defeat us.
That being said, and with the understanding that we are never really sure which Agadita we are supposed to believe as absolute truth and which we are supposed to believe as a lesson, I wouldn't dismiss the story out of hand, even if you don't believe in it completely.
But another thing to think of... There is no physicality in the World to Come. So all of this "torment of Hell" isn't necessarily simply that.
The World to Come is also called "Ha'olam Ha'emet", or the World of Truth. Perhaps, in during the time of his life, Nebuchadnezzar thought of amassing power and getting it by exiling the Jews, destroying the Temple, and whatever cruelty he performed so doing was for the glory of Babylon. Or something.
Once he got to the World of Truth, and he saw God's judgment, and saw how valued the Jews were and what he personally did and commanded to be done... He was so embarrassed that he could not see fit to forgive himself and face God. So the rather graphic description of him in that story in Gittin wasn't literal, but there was no way he could reconcile his doings with God.
While it might have happened, or it might not have happened, it isn't impossible to believe that people like Chelminicky or Hitler might have difficulty reconciling their differences with what they did in life to what God actually wanted in the grand scheme of things.
Is it a permanent punishment? We don't know. But we have that Agadita, so I'm not closed to the idea.